README revision 95154
1# Copyright (c) 1998-2002 Sendmail, Inc. and its suppliers. 2# All rights reserved. 3# Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 4# Copyright (c) 1988 5# The Regents of the University of California. All rights reserved. 6# 7# By using this file, you agree to the terms and conditions set 8# forth in the LICENSE file which can be found at the top level of 9# the sendmail distribution. 10# 11# 12# $Id: README,v 1.1.1.12 2002/04/10 03:04:47 gshapiro Exp $ 13# 14 15This directory contains the source files for sendmail(TM). 16 17 ******************************************************************* 18 !! Read sendmail/SECURITY for important installation information !! 19 ******************************************************************* 20 21 ********************************************************** 22 ** Read below for more details on building sendmail. ** 23 ********************************************************** 24 25************************************************************************** 26** IMPORTANT: Read the appropriate paragraphs in the section on ** 27** ``Operating System and Compile Quirks''. ** 28************************************************************************** 29 30For detailed instructions, please read the document ../doc/op/op.me: 31 32 cd ../doc/op ; make op.ps op.txt 33 34Sendmail is a trademark of Sendmail, Inc. 35 36 37+-------------------+ 38| BUILDING SENDMAIL | 39+-------------------+ 40 41By far, the easiest way to compile sendmail is to use the "Build" 42script: 43 44 sh Build 45 46This uses the "uname" command to figure out what architecture you are 47on and creates a proper Makefile accordingly. It also creates a 48subdirectory per object format, so that multiarchitecture support is 49easy. In general this should be all you need. IRIX 6.x users should 50read the note below in the OPERATING SYSTEM AND COMPILE QUIRKS section. 51 52If you need to look at other include or library directories, use the 53-I or -L flags on the command line, e.g., 54 55 sh Build -I/usr/sww/include -L/usr/sww/lib 56 57It's also possible to create local site configuration in the file 58site.config.m4 (or another file settable with the -f flag). This 59file contains M4 definitions for various compilation values; the 60most useful are: 61 62confMAPDEF -D flags to specify database types to be included 63 (see below) 64confENVDEF -D flags to specify other environment information 65confINCDIRS -I flags for finding include files during compilation 66confLIBDIRS -L flags for finding libraries during linking 67confLIBS -l flags for selecting libraries during linking 68confLDOPTS other ld(1) linker options 69 70Others can be found by examining Makefile.m4. Please read 71../devtools/README for more information about the site.config.m4 72file. 73 74You can recompile from scratch using the -c flag with the Build 75command. This removes the existing compilation directory for the 76current platform and builds a new one. The -c flag must also 77be used if any site.*.m4 file in devtools/Site/ is changed. 78 79Porting to a new Unix-based system should be a matter of creating 80an appropriate configuration file in the devtools/OS/ directory. 81 82 83+----------------------+ 84| DATABASE DEFINITIONS | 85+----------------------+ 86 87There are several database formats that can be used for the alias files 88and for general maps. When used for alias files they interact in an 89attempt to be backward compatible. 90 91The options are: 92 93NEWDB The new Berkeley DB package. Some systems (e.g., BSD/OS and 94 Digital UNIX 4.0) have some version of this package 95 pre-installed. If your system does not have Berkeley DB 96 pre-installed, or the version installed is not version 2.0 97 or greater (e.g., is Berkeley DB 1.85 or 1.86), get the 98 current version from http://www.sleepycat.com/. DO NOT 99 use a version from any of the University of California, 100 Berkeley "Net" or other distributions. If you are still 101 running BSD/386 1.x, you will need to upgrade the included 102 Berkeley DB library to a current version. NEWDB is included 103 automatically if the Build script can find a library named 104 libdb.a or libdb.so. 105NDBM The older NDBM implementation -- the very old V7 DBM 106 implementation is no longer supported. 107NIS Network Information Services. To use this you must have 108 NIS support on your system. 109NISPLUS NIS+ (the revised NIS released with Solaris 2). You must 110 have NIS+ support on your system to use this flag. 111HESIOD Support for Hesiod (from the DEC/Athena distribution). You 112 must already have Hesiod support on your system for this to 113 work. You may be able to get this to work with the MIT/Athena 114 version of Hesiod, but that's likely to be a lot of work. 115 BIND 8.X also includes Hesiod support. 116LDAPMAP Lightweight Directory Access Protocol support. You will 117 have to install the UMich or OpenLDAP 118 (http://www.openldap.org/) ldap and lber libraries to use 119 this flag. 120MAP_REGEX Regular Expression support. You will need to use an 121 operating system which comes with the POSIX regex() 122 routines or install a regexp library such as libregex from 123 the Free Software Foundation. 124DNSMAP DNS map support. Requires NAMED_BIND. 125PH_MAP PH map support. You will need the libphclient library from 126 the nph package (http://www-dev.cso.uiuc.edu/ph/nph/). 127MAP_NSD nsd map support (IRIX 6.5 and later). 128 129>>> NOTE WELL for NEWDB support: If you want to get ndbm support, for 130>>> Berkeley DB versions under 2.0, it is CRITICAL that you remove 131>>> ndbm.o from libdb.a before you install it and DO NOT install ndbm.h; 132>>> for Berkeley DB versions 2.0 through 2.3.14, remove dbm.o from libdb.a 133>>> before you install it. If you don't delete these, there is absolutely 134>>> no point to including -DNDBM, since it will just get you another 135>>> (inferior) API to the same format database. These files OVERRIDE 136>>> calls to ndbm routines -- in particular, if you leave ndbm.h in, 137>>> you can find yourself using the new db package even if you don't 138>>> define NEWDB. Berkeley DB versions later than 2.3.14 do not need 139>>> to be modified. Please also consult the README in the top level 140>>> directory of the sendmail distribution for other important information. 141>>> 142>>> Further note: DO NOT remove your existing /usr/include/ndbm.h -- 143>>> you need that one. But do not install an updated ndbm.h in 144>>> /usr/include, /usr/local/include, or anywhere else. 145 146If NEWDB and NDBM are defined (but not NIS), then sendmail will read 147NDBM format alias files, but the next time a newaliases is run the 148format will be converted to NEWDB; that format will be used forever 149more. This is intended as a transition feature. 150 151If NEWDB, NDBM, and NIS are all defined and the name of the file includes 152the string "/yp/", sendmail will rebuild BOTH the NEWDB and NDBM format 153alias files. However, it will only read the NEWDB file; the NDBM format 154file is used only by the NIS subsystem. This is needed because the NIS 155maps on an NIS server are built directly from the NDBM files. 156 157If NDBM and NIS are defined (regardless of the definition of NEWDB), 158and the filename includes the string "/yp/", sendmail adds the special 159tokens "YP_LAST_MODIFIED" and "YP_MASTER_NAME", both of which are 160required if the NDBM file is to be used as an NIS map. 161 162All of these flags are normally defined in a confMAPDEF setting in your 163site.config.m4. 164 165If you define NEWDB or HESIOD you get the User Database (USERDB) 166automatically. Generally you do want to have NEWDB for it to do 167anything interesting. See above for getting the Berkeley DB 168package (i.e., NEWDB). There is no separate "user database" 169package -- don't bother searching for it on the net. 170 171Hesiod and LDAP require libraries that may not be installed with your 172system. These are outside of my ability to provide support. See the 173"Quirks" section for more information. 174 175The regex map can be used to see if an address matches a certain regular 176expression. For example, all-numerics local parts are common spam 177addresses, so "^[0-9]+$" would match this. By using such a map in a 178check_* rule-set, you can block a certain range of addresses that would 179otherwise be considered valid. 180 181 182+---------------+ 183| COMPILE FLAGS | 184+---------------+ 185 186Wherever possible, I try to make sendmail pull in the correct 187compilation options needed to compile on various environments based on 188automatically defined symbols. Some machines don't seem to have useful 189symbols available, requiring that a compilation flag be defined in 190the Makefile; see the devtools/OS subdirectory for the supported 191architectures. 192 193If you are a system to which sendmail has already been ported you 194should not have to touch the following symbols. But if you are porting, 195you may have to tweak the following compilation flags in conf.h in order 196to get it to compile and link properly: 197 198SYSTEM5 Adjust for System V (not necessarily Release 4). 199SYS5SIGNALS Use System V signal semantics -- the signal handler 200 is automatically dropped when the signal is caught. 201 If this is not set, use POSIX/BSD semantics, where the 202 signal handler stays in force until an exec or an 203 explicit delete. Implied by SYSTEM5. 204SYS5SETPGRP Use System V setpgrp() semantics. Implied by SYSTEM5. 205HASNICE Define this to zero if you lack the nice(2) system call. 206HASRRESVPORT Define this to zero if you lack the rresvport(3) system call. 207HASFCHMOD Define this to one if you have the fchmod(2) system call. 208 This improves security. 209HASFCHOWN Define this to one if you have the fchown(2) system call. 210 This is required for the TrustedUser option if sendmail 211 must rebuild an (alias) map. 212HASFLOCK Set this if you prefer to use the flock(2) system call 213 rather than using fcntl-based locking. Fcntl locking 214 has some semantic gotchas, but many vendor systems 215 also interface it to lockd(8) to do NFS-style locking. 216 Unfortunately, may vendors implementations of fcntl locking 217 is just plain broken (e.g., locks are never released, 218 causing your sendmail to deadlock; when the kernel runs 219 out of locks your system crashes). For this reason, I 220 recommend always defining this unless you are absolutely 221 certain that your fcntl locking implementation really works. 222HASUNAME Set if you have the "uname" system call. Implied by 223 SYSTEM5. 224HASUNSETENV Define this if your system library has the "unsetenv" 225 subroutine. 226HASSETSID Define this if you have the setsid(2) system call. This 227 is implied if your system appears to be POSIX compliant. 228HASINITGROUPS Define this if you have the initgroups(3) routine. 229HASSETVBUF Define this if you have the setvbuf(3) library call. 230 If you don't, setlinebuf will be used instead. This 231 defaults on if your compiler defines __STDC__. 232HASSETREUID Define this if you have setreuid(2) ***AND*** root can 233 use setreuid to change to an arbitrary user. This second 234 condition is not satisfied on AIX 3.x. You may find that 235 your system has setresuid(2), (for example, on HP-UX) in 236 which case you will also have to #define setreuid(r, e) 237 to be the appropriate call. Some systems (such as Solaris) 238 have a compatibility routine that doesn't work properly, 239 but may have "saved user ids" properly implemented so you 240 can ``#define setreuid(r, e) seteuid(e)'' and have it work. 241 The important thing is that you have a call that will set 242 the effective uid independently of the real or saved uid 243 and be able to set the effective uid back again when done. 244 There's a test program in ../test/t_setreuid.c that will 245 try things on your system. Setting this improves the 246 security, since sendmail doesn't have to read .forward 247 and :include: files as root. There are certain attacks 248 that may be unpreventable without this call. 249USESETEUID Define this to 1 if you have a seteuid(2) system call that 250 will allow root to set only the effective user id to an 251 arbitrary value ***AND*** you have saved user ids. This is 252 preferable to HASSETREUID if these conditions are fulfilled. 253 These are the semantics of the to-be-released revision of 254 Posix.1. The test program ../test/t_seteuid.c will try 255 this out on your system. If you define both HASSETREUID 256 and USESETEUID, the former is ignored. 257HASSETEGID Define this if you have setegid(2) and it can be 258 used to set the saved gid. Please run t_dropgid in 259 test/ if you are not sure whether the call works. 260HASSETREGID Define this if you have setregid(2) and it can be 261 used to set the saved gid. Please run t_dropgid in 262 test/ if you are not sure whether the call works. 263HASSETRESGID Define this if you have setresgid(2) and it can be 264 used to set the saved gid. Please run t_dropgid in 265 test/ if you are not sure whether the call works. 266HASLSTAT Define this if you have symbolic links (and thus the 267 lstat(2) system call). This improves security. Unlike 268 most other options, this one is on by default, so you 269 need to #undef it in conf.h if you don't have symbolic 270 links (these days everyone does). 271HASSETRLIMIT Define this to 1 if you have the setrlimit(2) syscall. 272 You can define it to 0 to force it off. It is assumed 273 if you are running a BSD-like system. 274HASULIMIT Define this if you have the ulimit(2) syscall (System V 275 style systems). HASSETRLIMIT overrides, as it is more 276 general. 277HASWAITPID Define this if you have the waitpid(2) syscall. 278HASGETDTABLESIZE 279 Define this if you have the getdtablesize(2) syscall. 280HAS_ST_GEN Define this to 1 if your system has the st_gen field in 281 the stat structure (see stat(2)). 282HASSRANDOMDEV Define this if your system has the srandomdev(3) function 283 call. 284HASURANDOMDEV Define this if your system has /dev/urandom(4). 285HASSTRERROR Define this if you have the libc strerror(3) function (which 286 should be declared in <errno.h>), and it should be used 287 instead of sys_errlist. 288SM_CONF_GETOPT Define this as 0 if you need a reimplementation of getopt(3). 289 On some systems, getopt does very odd things if called 290 to scan the arguments twice. This flag will ask sendmail 291 to compile in a local version of getopt that works 292 properly. 293NEEDSTRTOL Define this if your standard C library does not define 294 strtol(3). This will compile in a local version. 295NEEDFSYNC Define this if your standard C library does not define 296 fsync(2). This will try to simulate the operation using 297 fcntl(2); if that is not available it does nothing, which 298 isn't great, but at least it compiles and runs. 299HASGETUSERSHELL Define this to 1 if you have getusershell(3) in your 300 standard C library. If this is not defined, or is defined 301 to be 0, sendmail will scan the /etc/shells file (no 302 NIS-style support, defaults to /bin/sh and /bin/csh if 303 that file does not exist) to get a list of unrestricted 304 user shells. This is used to determine whether users 305 are allowed to forward their mail to a program or a file. 306NEEDPUTENV Define this if your system needs am emulation of the 307 putenv(3) call. Define to 1 to implement it in terms 308 of setenv(3) or to 2 to do it in terms of primitives. 309NOFTRUNCATE Define this if you don't have the ftruncate(2) syscall. 310 If you don't have this system call, there is an unavoidable 311 race condition that occurs when creating alias databases. 312GIDSET_T The type of entries in a gidset passed as the second 313 argument to getgroups(2). Historically this has been an 314 int, so this is the default, but some systems (such as 315 IRIX) pass it as a gid_t, which is an unsigned short. 316 This will make a difference, so it is important to get 317 this right! However, it is only an issue if you have 318 group sets. 319SLEEP_T The type returned by the system sleep() function. 320 Defaults to "unsigned int". Don't worry about this 321 if you don't have compilation problems. 322ARBPTR_T The type of an arbitrary pointer -- defaults to "void *". 323 If you are an very old compiler you may need to define 324 this to be "char *". 325SOCKADDR_LEN_T The type used for the third parameter to accept(2), 326 getsockname(2), and getpeername(2), representing the 327 length of a struct sockaddr. Defaults to int. 328SOCKOPT_LEN_T The type used for the fifth parameter to getsockopt(2) 329 and setsockopt(2), representing the length of the option 330 buffer. Defaults to int. 331LA_TYPE The type of load average your kernel supports. These 332 can be one of: 333 LA_ZERO (1) -- it always returns the load average as 334 "zero" (and does so on all architectures). 335 LA_INT (2) to read /dev/kmem for the symbol avenrun and 336 interpret as a long integer. 337 LA_FLOAT (3) same, but interpret the result as a floating 338 point number. 339 LA_SHORT (6) to interpret as a short integer. 340 LA_SUBR (4) if you have the getloadavg(3) routine in your 341 system library. 342 LA_MACH (5) to use MACH-style load averages (calls 343 processor_set_info()), 344 LA_PROCSTR (7) to read /proc/loadavg and interpret it 345 as a string representing a floating-point 346 number (Linux-style). 347 LA_READKSYM (8) is an implementation suitable for some 348 versions of SVr4 that uses the MIOC_READKSYM ioctl 349 call to read /dev/kmem. 350 LA_DGUX (9) is a special implementation for DG/UX that uses 351 the dg_sys_info system call. 352 LA_HPUX (10) is an HP-UX specific version that uses the 353 pstat_getdynamic system call. 354 LA_IRIX6 (11) is an IRIX 6.x specific version that adapts 355 to 32 or 64 bit kernels; it is otherwise very similar 356 to LA_INT. 357 LA_KSTAT (12) uses the (Solaris-specific) kstat(3k) 358 implementation. 359 LA_DEVSHORT (13) reads a short from a system file (default: 360 /dev/table/avenrun) and scales it in the same manner 361 as LA_SHORT. 362 LA_INT, LA_SHORT, LA_FLOAT, and LA_READKSYM have several 363 other parameters that they try to divine: the name of your 364 kernel, the name of the variable in the kernel to examine, 365 the number of bits of precision in a fixed point load average, 366 and so forth. LA_DEVSHORT uses _PATH_AVENRUN to find the 367 device to be read to find the load average. 368 In desperation, use LA_ZERO. The actual code is in 369 conf.c -- it can be tweaked if you are brave. 370FSHIFT For LA_INT, LA_SHORT, and LA_READKSYM, this is the number 371 of bits of load average after the binary point -- i.e., 372 the number of bits to shift right in order to scale the 373 integer to get the true integer load average. Defaults to 8. 374_PATH_UNIX The path to your kernel. Needed only for LA_INT, LA_SHORT, 375 and LA_FLOAT. Defaults to "/unix" on System V, "/vmunix" 376 everywhere else. 377LA_AVENRUN For LA_INT, LA_SHORT, and LA_FLOAT, the name of the kernel 378 variable that holds the load average. Defaults to "avenrun" 379 on System V, "_avenrun" everywhere else. 380SFS_TYPE Encodes how your kernel can locate the amount of free 381 space on a disk partition. This can be set to SFS_NONE 382 (0) if you have no way of getting this information, 383 SFS_USTAT (1) if you have the ustat(2) system call, 384 SFS_4ARGS (2) if you have a four-argument statfs(2) 385 system call (and the include file is <sys/statfs.h>), 386 SFS_VFS (3), SFS_MOUNT (4), SFS_STATFS (5) if you have 387 the two-argument statfs(2) system call with includes in 388 <sys/vfs.h>, <sys/mount.h>, or <sys/statfs.h> respectively, 389 or SFS_STATVFS (6) if you have the two-argument statvfs(2) 390 call. The default if nothing is defined is SFS_NONE. 391SFS_BAVAIL with SFS_4ARGS you can also set SFS_BAVAIL to the field name 392 in the statfs structure that holds the useful information; 393 this defaults to f_bavail. 394SPT_TYPE Encodes how your system can display what a process is doing 395 on a ps(1) command (SPT stands for Set Process Title). Can 396 be set to: 397 SPT_NONE (0) -- Don't try to set the process title at all. 398 SPT_REUSEARGV (1) -- Pad out your argv with the information; 399 this is the default if none specified. 400 SPT_BUILTIN (2) -- The system library has setproctitle. 401 SPT_PSTAT (3) -- Use the PSTAT_SETCMD option to pstat(2) 402 to set the process title; this is used by HP-UX. 403 SPT_PSSTRINGS (4) -- Use the magic PS_STRINGS pointer (4.4BSD). 404 SPT_SYSMIPS (5) -- Use sysmips() supported by NEWS-OS 6. 405 SPT_SCO (6) -- Write kernel u. area. 406 SPT_CHANGEARGV (7) -- Write pointers to our own strings into 407 the existing argv vector. 408SPT_PADCHAR Character used to pad the process title; if undefined, 409 the space character (0x20) is used. This is ignored if 410 SPT_TYPE != SPT_REUSEARGV 411ERRLIST_PREDEFINED 412 If set, assumes that some header file defines sys_errlist. 413 This may be needed if you get type conflicts on this 414 variable -- otherwise don't worry about it. 415WAITUNION The wait(2) routine takes a "union wait" argument instead 416 of an integer argument. This is for compatibility with 417 old versions of BSD. 418SCANF You can set this to extend the F command to accept a 419 scanf string -- this gives you a primitive parser for 420 class definitions -- BUT it can make you vulnerable to 421 core dumps if the target file is poorly formed. 422SYSLOG_BUFSIZE You can define this to be the size of the buffer that 423 syslog accepts. If it is not defined, it assumes a 424 1024-byte buffer. If the buffer is very small (under 425 256 bytes) the log message format changes -- each 426 e-mail message will log many more messages, since it 427 will log each piece of information as a separate line 428 in syslog. 429BROKEN_RES_SEARCH 430 On Ultrix (and maybe other systems?) if you use the 431 res_search routine with an unknown host name, it returns 432 -1 but sets h_errno to 0 instead of HOST_NOT_FOUND. If 433 you set this, sendmail considers 0 to be the same as 434 HOST_NOT_FOUND. 435NAMELISTMASK If defined, values returned by nlist(3) are masked 436 against this value before use -- a common value is 437 0x7fffffff to strip off the top bit. 438BSD4_4_SOCKADDR If defined, socket addresses have an sa_len field that 439 defines the length of this address. 440SAFENFSPATHCONF Set this to 1 if and only if you have verified that a 441 pathconf(2) call with _PC_CHOWN_RESTRICTED argument on an 442 NFS filesystem where the underlying system allows users to 443 give away files to other users returns <= 0. Be sure you 444 try both on NFS V2 and V3. Some systems assume that their 445 local policy apply to NFS servers -- this is a bad 446 assumption! The test/t_pathconf.c program will try this 447 for you -- you have to run it in a directory that is 448 mounted from a server that allows file giveaway. 449SIOCGIFCONF_IS_BROKEN 450 Set this if your system has an SIOCGIFCONF ioctl defined, 451 but it doesn't behave the same way as "most" systems (BSD, 452 Solaris, SunOS, HP-UX, etc.) 453SIOCGIFNUM_IS_BROKEN 454 Set this if your system has an SIOCGIFNUM ioctl defined, 455 but it doesn't behave the same way as "most" systems 456 (Solaris, HP-UX). 457FAST_PID_RECYCLE 458 Set this if your system can reuse the same PID in the same 459 second. 460SO_REUSEADDR_IS_BROKEN 461 Set this if your system has a setsockopt() SO_REUSEADDR 462 flag but doesn't pay attention to it when trying to bind a 463 socket to a recently closed port. 464NEEDSGETIPNODE Set this if your system supports IPv6 but doesn't include 465 the getipnodeby{name,addr}() functions. Set automatically 466 for Linux's glibc. 467PIPELINING Support SMTP PIPELINING (set by default). 468USING_NETSCAPE_LDAP 469 Deprecated in favor of SM_CONF_LDAP_MEMFREE. See 470 libsm/README. 471NEEDLINK Set this if your system doesn't have a link() call. It 472 will create a copy of the file instead of a hardlink. 473USE_ENVIRON Set this to 1 to access process environment variables from 474 the external variable environ instead of the third 475 parameter of main(). 476USE_DOUBLE_FORK By default this is on (1). Set it to 0 to suppress the 477 extra fork() used to avoid intermediate zombies. 478 479 480+-----------------------+ 481| COMPILE-TIME FEATURES | 482+-----------------------+ 483 484There are a bunch of features that you can decide to compile in, such 485as selecting various database packages and special protocol support. 486Several are assumed based on other compilation flags -- if you want to 487"un-assume" something, you probably need to edit conf.h. Compilation 488flags that add support for special features include: 489 490NDBM Include support for "new" DBM library for aliases and maps. 491 Normally defined in the Makefile. 492NEWDB Include support for Berkeley DB package (hash & btree) 493 for aliases and maps. Normally defined in the Makefile. 494 If the version of NEWDB you have is the old one that does 495 not include the "fd" call (this call was added in version 496 1.5 of the Berkeley DB code), you must upgrade to the 497 current version of Berkeley DB. 498NIS Define this to get NIS (YP) support for aliases and maps. 499 Normally defined in the Makefile. 500NISPLUS Define this to get NIS+ support for aliases and maps. 501 Normally defined in the Makefile. 502HESIOD Define this to get Hesiod support for aliases and maps. 503 Normally defined in the Makefile. 504NETINFO Define this to get NeXT NetInfo support for aliases and maps. 505 Normally defined in the Makefile. 506LDAPMAP Define this to get LDAP support for maps. 507PH_MAP Define this to get PH support for maps. 508MAP_NSD Define this to get nsd support for maps. 509USERDB Define this to 1 to include support for the User Information 510 Database. Implied by NEWDB or HESIOD. You can use 511 -DUSERDB=0 to explicitly turn it off. 512IDENTPROTO Define this as 1 to get IDENT (RFC 1413) protocol support. 513 This is assumed unless you are running on Ultrix or 514 HP-UX, both of which have a problem in the UDP 515 implementation. You can define it to be 0 to explicitly 516 turn off IDENT protocol support. If defined off, the code 517 is actually still compiled in, but it defaults off; you 518 can turn it on by setting the IDENT timeout in the 519 configuration file. 520IP_SRCROUTE Define this to 1 to get IP source routing information 521 displayed in the Received: header. This is assumed on 522 most systems, but some (e.g., Ultrix) apparently have a 523 broken version of getsockopt that doesn't properly 524 support the IP_OPTIONS call. You probably want this if 525 your OS can cope with it. Symptoms of failure will be that 526 it won't compile properly (that is, no support for fetching 527 IP_OPTIONs), or it compiles but source-routed TCP connections 528 either refuse to open or open and hang for no apparent reason. 529 Ultrix and AIX3 are known to fail this way. 530LOG Set this to get syslog(3) support. Defined by default 531 in conf.h. You want this if at all possible. 532NETINET Set this to get TCP/IP support. Defined by default 533 in conf.h. You probably want this. 534NETINET6 Set this to get IPv6 support. Other configuration may 535 be needed in conf.h for your particular operating system. 536 Also, DaemonPortOptions must be set appropriately for 537 sendmail to accept IPv6 connections. 538NETISO Define this to get ISO networking support. 539NETUNIX Define this to get Unix domain networking support. Defined 540 by default. A few bizarre systems (SCO, ISC, Altos) don't 541 support this networking domain. 542NETNS Define this to get NS networking support. 543NETX25 Define this to get X.25 networking support. 544NAMED_BIND If non-zero, include DNS (name daemon) support, including 545 MX support. The specs say you must use this if you run 546 SMTP. You don't have to be running a name server daemon 547 on your machine to need this -- any use of the DNS resolver, 548 including remote access to another machine, requires this 549 option. Defined by default in conf.h. Define it to zero 550 ONLY on machines that do not use DNS in any way. 551MATCHGECOS Permit fuzzy matching of user names against the full 552 name (GECOS) field in the /etc/passwd file. This should 553 probably be on, since you can disable it from the config 554 file if you want to. Defined by default in conf.h. 555MIME8TO7 If non-zero, include 8 to 7 bit MIME conversions. This 556 also controls advertisement of 8BITMIME in the ESMTP 557 startup dialogue. 558MIME7TO8 If non-zero, include 7 to 8 bit MIME conversions. 559HES_GETMAILHOST Define this to 1 if you are using Hesiod with the 560 hes_getmailhost() routine. This is included with the MIT 561 Hesiod distribution, but not with the DEC Hesiod distribution. 562XDEBUG Do additional internal checking. These don't cost too 563 much; you might as well leave this on. 564TCPWRAPPERS Turns on support for the TCP wrappers library (-lwrap). 565 See below for further information. 566SECUREWARE Enable calls to the SecureWare luid enabling/changing routines. 567 SecureWare is a C2 security package added to several UNIX's 568 (notably ConvexOS) to get a C2 Secure system. This 569 option causes mail delivery to be done with the luid of the 570 recipient. 571SHARE_V1 Support for the fair share scheduler, version 1. Setting to 572 1 causes final delivery to be done using the recipients 573 resource limitations. So far as I know, this is only 574 supported on ConvexOS. 575SASL Enables SMTP AUTH (RFC 2554). This requires the Cyrus SASL 576 library (ftp://ftp.andrew.cmu.edu/pub/cyrus-mail/). Please 577 install at least version 1.5.13. See below for further 578 information: SASL COMPILATION AND CONFIGURATION. If your 579 SASL library is older than 1.5.10, you have to set this 580 to its version number using a simple conversion: a.b.c 581 -> c + b*100 + a*10000, e.g. for 1.5.9 define SASL=10509. 582 Note: Using an older version than 1.5.5 of Cyrus SASL is 583 not supported. Starting with version 1.5.10, setting SASL=1 584 is sufficient. Any value other than 1 (or 0) will be 585 compared with the actual version found and if there is a 586 mismatch, compilation will fail. 587EGD Define this if your system has EGD installed, see 588 http://egd.sourceforge.net/ . It should be used to 589 seed the PRNG for STARTTLS if HASURANDOMDEV is not defined. 590STARTTLS Enables SMTP STARTTLS (RFC 2487). This requires OpenSSL 591 (http://www.OpenSSL.org/); use OpenSSL 0.9.5a or later 592 (if compatible with this version), do not use 0.9.3. 593 See STARTTLS COMPILATION AND CONFIGURATION for further 594 information. 595TLS_NO_RSA Turn off support for RSA algorithms in STARTTLS. 596MILTER Turn on support for external filters using the Milter API. 597 See libmilter/README for more information. 598REQUIRES_DIR_FSYNC Turn on support for file systems that require to 599 call fsync() for a directory if the meta-data in it has 600 been changed. This should be turned on at least for 601 ReiserFS; it is enabled by default for Linux. An alternative 602 to this compile time flag is to mount the queue directory 603 without the -async option, or using chattr +S on Linux. 604 605Generic notice: If you enable a compile time option that needs 606libraries or include files that don't come with sendmail or are 607installed in a location that your C compiler doesn't use by default 608you should set confINCDIRS and confLIBDIRS as explained in the 609first section: BUILDING SENDMAIL. 610 611 612+---------------------+ 613| DNS/RESOLVER ISSUES | 614+---------------------+ 615 616Many systems have old versions of the resolver library. At a minimum, 617you should be running BIND 4.8.3; older versions may compile, but they 618have known bugs that should give you pause. 619 620Common problems in old versions include "undefined" errors for 621dn_skipname. 622 623Some people have had a problem with BIND 4.9; it uses some routines 624that it expects to be externally defined such as strerror(). It may 625help to link with "-l44bsd" to solve this problem. This has apparently 626been fixed in later versions of BIND, starting around 4.9.3. In other 627words, if you use 4.9.0 through 4.9.2, you need -l44bsd; for earlier or 628later versions, you do not. 629 630!PLEASE! be sure to link with the same version of the resolver as 631the header files you used -- some people have used the 4.9 headers 632and linked with BIND 4.8 or vice versa, and it doesn't work. 633Unfortunately, it doesn't fail in an obvious way -- things just 634subtly don't work. 635 636WILDCARD MX RECORDS ARE A BAD IDEA! The only situation in which they 637work reliably is if you have two versions of DNS, one in the real world 638which has a wildcard pointing to your firewall, and a completely 639different version of the database internally that does not include 640wildcard MX records that match your domain. ANYTHING ELSE WILL GIVE 641YOU HEADACHES! 642 643When attempting to canonify a hostname, some broken name servers will 644return SERVFAIL (a temporary failure) on T_AAAA (IPv6) lookups. If you 645want to excuse this behavior, include WorkAroundBrokenAAAA in 646ResolverOptions. However, instead, we recommend catching the problem and 647reporting it to the name server administrator so we can rid the world of 648broken name servers. 649 650 651+----------------------------------------+ 652| STARTTLS COMPILATION AND CONFIGURATION | 653+----------------------------------------+ 654 655Please read the documentation accompanying the OpenSSL library. You 656have to compile and install the OpenSSL libraries before you can compile 657sendmail. See devtools/README how to set the correct compile time 658parameters; you should at least set the following variables: 659 660APPENDDEF(`conf_sendmail_ENVDEF', `-DSTARTTLS') 661APPENDDEF(`conf_sendmail_LIBS', `-lssl -lcrypto') 662 663If you have installed the OpenSSL libraries and include files in 664a location that your C compiler doesn't use by default you should 665set confINCDIRS and confLIBDIRS as explained in the first section: 666BUILDING SENDMAIL. 667 668Configuration information can be found in doc/op/op.me (required 669certificates) and cf/README (how to tell sendmail about certificates). 670 671To perform an initial test, connect to your sendmail daemon 672(telnet localhost 25) and issue a EHLO localhost and see whether 673250-STARTTLS 674is in the response. If it isn't, run the daemon with 675-O LogLevel=14 676and try again. Then take a look at the logfile and see whether 677there are any problems listed about permissions (unsafe files) 678or the validity of X.509 certificates. 679 680Further information can be found via: 681http://www.sendmail.org/tips/ 682 683 684+------------------------------------+ 685| SASL COMPILATION AND CONFIGURATION | 686+------------------------------------+ 687 688Please read the documentation accompanying the Cyrus SASL library 689(INSTALL and README). If you use Berkeley DB for Cyrus SASL then 690you must compile sendmail with the same version of Berkeley DB. 691See devtools/README how to set the correct compile time parameters; 692you should at least set the following variables: 693 694APPENDDEF(`conf_sendmail_ENVDEF', `-DSASL') 695APPENDDEF(`conf_sendmail_LIBS', `-lsasl') 696 697If you have installed the Cyrus SASL library and include files in 698a location that your C compiler doesn't use by default you should 699set confINCDIRS and confLIBDIRS as explained in the first section: 700BUILDING SENDMAIL. 701 702You have to select and install authentication mechanisms and tell 703sendmail where to find the sasl library and the include files (see 704devtools/README for the parameters to set). Setup the required 705users and passwords as explained in the SASL documentation. See 706also cf/README for authentication related options (especially 707DefaultAuthInfo if you want authentication between MTAs). 708 709To perform an initial test, connect to your sendmail daemon 710(telnet localhost 25) and issue a EHLO localhost and see whether 711250-AUTH .... 712is in the response. If it isn't, run the daemon with 713-O LogLevel=14 714and try again. Then take a look at the logfile and see whether 715there are any security related problems listed (unsafe files). 716 717Further information can be found via: 718http://www.sendmail.org/tips/ 719 720 721+-------------------------------------+ 722| OPERATING SYSTEM AND COMPILE QUIRKS | 723+-------------------------------------+ 724 725GCC problems 726 When compiling with "gcc -O -Wall" specify "-DSM_OMIT_BOGUS_WARNINGS" 727 too (see include/sm/cdefs.h for more info). 728 729 ***************************************************************** 730 ** IMPORTANT: DO NOT USE OPTIMIZATION (``-O'') IF YOU ARE ** 731 ** RUNNING GCC 2.4.x or 2.5.x. THERE IS A BUG IN THE GCC ** 732 ** OPTIMIZER THAT CAUSES SENDMAIL COMPILES TO FAIL MISERABLY. ** 733 ***************************************************************** 734 735 Jim Wilson of Cygnus believes he has found the problem -- it will 736 probably be fixed in GCC 2.5.6 -- but until this is verified, be 737 very suspicious of gcc -O. This problem is reported to have been 738 fixed in gcc 2.6. 739 740 A bug in gcc 2.5.5 caused problems compiling sendmail 8.6.5 with 741 optimization on a Sparc. If you are using gcc 2.5.5, youi should 742 upgrade to the latest version of gcc. 743 744 Apparently GCC 2.7.0 on the Pentium processor has optimization 745 problems. I recommend against using -O on that architecture. This 746 has been seen on FreeBSD 2.0.5 RELEASE. 747 748 Solaris 2.X users should use version 2.7.2.3 over 2.7.2. 749 750 We have been told there are problems with gcc 2.8.0. If you are 751 using this version, you should upgrade to 2.8.1 or later. 752 753GDBM GDBM does not work with sendmail 8.8 because the additional 754 security checks and file locking cause problems. Unfortunately, 755 gdbm does not provide a compile flag in its version of ndbm.h so 756 the code can adapt. Until the GDBM authors can fix these problems, 757 GDBM will not be supported. Please use Berkeley DB instead. 758 759Configuration file location 760 Up to 8.6, sendmail tried to find the sendmail.cf file in the same 761 place as the vendors had put it, even when this was obviously 762 stupid. As of 8.7, sendmail ALWAYS looks for /etc/sendmail.cf. 763 Beginning with 8.10, sendmail uses /etc/mail/sendmail.cf. 764 You can get sendmail to use the stupid vendor .cf location by 765 adding -DUSE_VENDOR_CF_PATH during compilation, but this may break 766 support programs and scripts that need to find sendmail.cf. You 767 are STRONGLY urged to use symbolic links if you want to use the 768 vendor location rather than changing the location in the sendmail 769 binary. 770 771 NETINFO systems use NETINFO to determine the location of 772 sendmail.cf. The full path to sendmail.cf is stored as the value of 773 the "sendmail.cf" property in the "/locations/sendmail" 774 subdirectory of NETINFO. Set the value of this property to 775 "/etc/mail/sendmail.cf" (without the quotes) to use this new 776 default location for Sendmail 8.10.0 and higher. 777 778ControlSocket permissions 779 Paraphrased from BIND 8.2.1's README: 780 781 Solaris and other pre-4.4BSD kernels do not respect ownership or 782 protections on UNIX-domain sockets. The short term fix for this is to 783 override the default path and put such control sockets into root- 784 owned directories which do not permit non-root to r/w/x through them. 785 The long term fix is for all kernels to upgrade to 4.4BSD semantics. 786 787HP MPE/iX 788 The MPE-specific code within sendmail emulates a set-user-id root 789 environment for the sendmail binary. But there is no root uid 0 on 790 MPE, nor is there any support for set-user-id programs. Even when 791 sendmail thinks it is running as uid 0, it will still have the file 792 access rights of the underlying non-zero uid, but because sendmail is 793 an MPE priv-mode program it will still be able to call setuid() to 794 successfully switch to a new uid. 795 796 MPE setgid() semantics don't quite work the way sendmail expects, so 797 special emulation is done here also. 798 799 This uid/gid emulation is enabled via the setuid/setgid file mode bits 800 which are not currently used by MPE. Code in libsm/mpeix.c examines 801 these bits and enables emulation if they have been set, i.e., 802 chmod u+s,g+s /SENDMAIL/CURRENT/SENDMAIL. 803 804SunOS 4.x (Solaris 1.x) 805 You may have to use -lresolv on SunOS. However, beware that 806 this links in a new version of gethostbyname that does not 807 understand NIS, so you must have all of your hosts in DNS. 808 809 Some people have reported problems with the SunOS version of 810 -lresolv and/or in.named, and suggest that you get a newer 811 version. The symptoms are delays when you connect to the 812 SMTP server on a SunOS machine or having your domain added to 813 addresses inappropriately. There is a version of BIND 814 version 4.9 on gatekeeper.DEC.COM in pub/BSD/bind/4.9. 815 816 There is substantial disagreement about whether you can make 817 this work with resolv+, which allows you to specify a search-path 818 of services. Some people report that it works fine, others 819 claim it doesn't work at all (including causing sendmail to 820 drop core when it tries to do multiple resolv+ lookups for a 821 single job). I haven't tried resolv+, as we use DNS exclusively. 822 823 Should you want to try resolv+, it is on ftp.uu.net in 824 /networking/ip/dns. 825 826 Apparently getservbyname() can fail under moderate to high 827 load under some circumstances. This will exhibit itself as 828 the message ``554 makeconnection: service "smtp" unknown''. 829 The problem has been traced to one or more blank lines in 830 /etc/services on the NIS server machine. Delete these 831 and it should work. This info is thanks to Brian Bartholomew 832 <bb@math.ufl.edu> of I-Kinetics, Inc. 833 834 NOTE: The SunOS 4.X linker uses library paths specified during 835 compilation using -L for run-time shared library searches. 836 Therefore, it is vital that relative and unsafe directory paths not 837 be used when compiling sendmail. 838 839SunOS 4.0.2 (Sun 386i) 840 Date: Fri, 25 Aug 1995 11:13:58 +0200 (MET DST) 841 From: teus@oce.nl 842 843 Sendmail 8.7.Beta.12 compiles and runs nearly out of the box with the 844 following changes: 845 * Don't use /usr/5bin in your PATH, but make /usr/5bin/uname 846 available as "uname" command. 847 * Use the defines "-DBSD4_3 -DNAMED_BIND=0" in 848 devtools/OS/SunOS.4.0, which is selected via the "uname" command. 849 I recommend to make available the db-library on the system first 850 (and change the Makefile to use this library). 851 Note that the sendmail.cf and aliases files are found in /etc. 852 853SunOS 4.1.3, 4.1.3_U1 854 Sendmail causes crashes on SunOS 4.1.3 and 4.1.3_U1. According 855 to Sun bug number 1077939: 856 857 If an application does a getsockopt() on a SOCK_STREAM (TCP) socket 858 after the other side of the connection has sent a TCP RESET for 859 the stream, the kernel gets a Bus Trap in the tcp_ctloutput() or 860 ip_ctloutput() routine. 861 862 For 4.1.3, this is fixed in patch 100584-08, available on the 863 Sunsolve 2.7.1 or later CDs. For 4.1.3_U1, this was fixed in patch 864 101790-01 (SunOS 4.1.3_U1: TCP socket and reset problems), later 865 obsoleted by patch 102010-05. 866 867 Sun patch 100584-08 is not currently publicly available on their 868 ftp site but a user has reported it can be found at other sites 869 using a web search engine. 870 871Solaris 2.x (SunOS 5.x) 872 To compile for Solaris, the Makefile built by Build must 873 include a SOLARIS definition which reflects the Solaris version 874 (i.e. -DSOLARIS=20400 for 2.4 or -DSOLARIS=20501 for 2.5.1). 875 If you are using gcc, make sure -I/usr/include is not used (or 876 it might complain about TopFrame). If you are using Sun's cc, 877 make sure /opt/SUNWspro/bin/cc is used instead of /usr/ucb/cc 878 (or it might complain about tm_zone). 879 880 The Solaris 2.x (x <= 3) "syslog" function is apparently limited 881 to something about 90 characters because of a kernel limitation. 882 If you have source code, you can probably up this number. You 883 can get patches that fix this problem: the patch ids are: 884 885 Solaris 2.1 100834 886 Solaris 2.2 100999 887 Solaris 2.3 101318 888 889 Be sure you have the appropriate patch installed or you won't 890 see system logging. 891 892Solaris 2.4 (SunOS 5.4) 893 If you include /usr/lib at the end of your LD_LIBRARY_PATH you run 894 the risk of getting the wrong libraries under some circumstances. 895 This is because of a new feature in Solaris 2.4, described by 896 Rod.Evans@Eng.Sun.COM: 897 898 >> Prior to SunOS 5.4, any LD_LIBRARY_PATH setting was ignored by the 899 >> runtime linker if the application was setxid (secure), thus your 900 >> applications search path would be: 901 >> 902 >> /usr/local/lib LD_LIBRARY_PATH component - IGNORED 903 >> /usr/lib LD_LIBRARY_PATH component - IGNORED 904 >> /usr/local/lib RPATH - honored 905 >> /usr/lib RPATH - honored 906 >> 907 >> the effect is that path 3 would be the first used, and this would 908 >> satisfy your resolv.so lookup. 909 >> 910 >> In SunOS 5.4 we made the LD_LIBRARY_PATH a little more flexible. 911 >> People who developed setxid applications wanted to be able to alter 912 >> the library search path to some degree to allow for their own 913 >> testing and debugging mechanisms. It was decided that the only 914 >> secure way to do this was to allow a `trusted' path to be used in 915 >> LD_LIBRARY_PATH. The only trusted directory we presently define 916 >> is /usr/lib. Thus a set-user-ID root developer could play with some 917 >> alternative shared object implementations and place them in 918 >> /usr/lib (being root we assume they'ed have access to write in this 919 >> directory). This change was made as part of 1155380 - after a 920 >> *huge* amount of discussion regarding the security aspect of things. 921 >> 922 >> So, in SunOS 5.4 your applications search path would be: 923 >> 924 >> /usr/local/lib from LD_LIBRARY_PATH - IGNORED (untrustworthy) 925 >> /usr/lib from LD_LIBRARY_PATH - honored (trustworthy) 926 >> /usr/local/lib from RPATH - honored 927 >> /usr/lib from RPATH - honored 928 >> 929 >> here, path 2 would be the first used. 930 931Solaris 2.5.1 (SunOS 5.5.1) and 2.6 (SunOS 5.6) 932 Apparently Solaris 2.5.1 patch 103663-01 installs a new 933 /usr/include/resolv.h file that defines the __P macro without 934 checking to see if it is already defined. This new resolv.h is also 935 included in the Solaris 2.6 distribution. This causes compile 936 warnings such as: 937 938 In file included from daemon.c:51: 939 /usr/include/resolv.h:208: warning: `__P' redefined 940 cdefs.h:58: warning: this is the location of the previous definition 941 942 These warnings can be safely ignored or you can create a resolv.h 943 file in the obj.SunOS.5.5.1.* or obj.SunOS.5.6.* directory that reads: 944 945 #undef __P 946 #include "/usr/include/resolv.h" 947 948 This problem was fixed in Solaris 7 (Sun bug ID 4081053). 949 950Solaris 7 (SunOS 5.7) 951 Solaris 7 includes LDAP libraries but the implementation was 952 lacking a few things. The following settings can be placed in 953 devtools/Site/site.SunOS.5.7.m4 if you plan on using those 954 libraries. 955 956 APPENDDEF(`confMAPDEF', `-DLDAPMAP') 957 APPENDDEF(`confENVDEF', `-DLDAP_VERSION_MAX=3') 958 APPENDDEF(`confLIBS', `-lldap') 959 960 Also, Sun's patch 107555 is needed to prevent a crash in the call 961 to ldap_set_option for LDAP_OPT_REFERRALS in ldapmap_setopts if 962 LDAP support is compiled in sendmail. 963 964Solaris 8 and later (SunOS 5.8 and later) 965 Solaris 8 and later can optionally install LDAP support. If you 966 have installed the Entire Distribution meta-cluster, you can use 967 the following in devtools/Site/site.SunOS.5.8.m4 (or other 968 appropriately versioned file) to enable LDAP: 969 970 APPENDDEF(`confMAPDEF', `-DLDAPMAP') 971 APPENDDEF(`confLIBS', `-lldap') 972 973Solaris 9 and later (SunOS 5.9 and later) 974 Solaris 9 and later have a revised LDAP library, libldap.so.5, 975 which is derived from a Netscape implementation, thus requiring 976 that SM_CONF_LDAP_MEMFREE be defined in conjunction with LDAPMAP: 977 978 APPENDDEF(`confMAPDEF', `-DLDAPMAP') 979 APPENDDEF(`confENVDEF', `-DSM_CONF_LDAP_MEMFREE') 980 APPENDDEF(`confLIBS', `-lldap') 981 982Solaris 983 If you are using dns for hostname resolution on Solaris, make sure 984 that the 'dns' entry is last on the hosts line in 985 '/etc/nsswitch.conf'. For example, use: 986 987 hosts: nisplus files dns 988 989 Do not use: 990 991 host: nisplus dns [NOTFOUND=return] files 992 993 Note that 'nisplus' above is an illustration. The same comment 994 applies no matter what naming services you are using. If you have 995 anything other than dns last, even after "[NOTFOUND=return]", 996 sendmail may not be able to determine whether an error was 997 temporary or permanent. The error returned by the solaris 998 gethostbyname() is the error for the last lookup used, and other 999 naming services do not have the same concept of temporary failure. 1000 1001Ultrix 1002 By default, the IDENT protocol is turned off on Ultrix. If you 1003 are running Ultrix 4.4 or later, or if you have included patch 1004 CXO-8919 for Ultrix 4.2 or 4.3 to fix the TCP problem, you can turn 1005 IDENT on in the configuration file by setting the "ident" timeout. 1006 1007 The Ultrix 4.5 Y2K patch (ULTV45-022-1) has changed the resolver 1008 included in libc.a. Unfortunately, the __RES symbol hasn't changed 1009 and therefore, sendmail can no longer automatically detect the 1010 newer version. If you get a compiler error: 1011 1012 /lib/libc.a(gethostent.o): local_hostname_length: multiply defined 1013 1014 Then rebuild with this in devtools/Site/site.ULTRIX.m4: 1015 1016 APPENDDEF(`conf_sendmail_ENVDEF', `-DNEEDLOCAL_HOSTNAME_LENGTH=0') 1017 1018Digital UNIX (formerly DEC OSF/1) 1019 If you are compiling on OSF/1 (DEC Alpha), you must use 1020 -L/usr/shlib (otherwise it core dumps on startup). You may also 1021 need -mld to get the nlist() function, although some versions 1022 apparently don't need this. 1023 1024 Also, the enclosed makefile removed /usr/sbin/smtpd; if you need 1025 it, just create the link to the sendmail binary. 1026 1027 On DEC OSF/1 3.2 or earlier, the MatchGECOS option doesn't work 1028 properly due to a bug in the getpw* routines. If you want to use 1029 this, use -DDEC_OSF_BROKEN_GETPWENT=1. The problem is fixed in 3.2C. 1030 1031 Digital's mail delivery agent, /bin/mail (aka /bin/binmail), will 1032 only preserve the envelope sender in the "From " header if 1033 DefaultUserID is set to daemon. Setting this to mailnull will 1034 cause all mail to have the header "From mailnull ...". To use 1035 a different DefaultUserID, you will need to use a different mail 1036 delivery agent (such as mail.local found in the sendmail 1037 distribution). 1038 1039 On Digital UNIX 4.0 and later, Berkeley DB 1.85 is included with the 1040 operating system and already has the ndbm.o module removed. However, 1041 Digital has modified the original Berkeley DB db.h include file. 1042 This results in the following warning while compiling map.c and udb.c: 1043 1044 cc: Warning: /usr/include/db.h, line 74: The redefinition of the macro 1045 "__signed" conflicts with a current definition because the replacement 1046 lists differ. The redefinition is now in effect. 1047 #define __signed signed 1048 ------------------------^ 1049 1050 This warning can be ignored. 1051 1052 Digital UNIX's linker checks /usr/ccs/lib/ before /usr/lib/. 1053 If you have installed a new version of BIND in /usr/include 1054 and /usr/lib, you will experience difficulties as Digital ships 1055 libresolv.a in /usr/ccs/lib/ as well. Be sure to replace both 1056 copies of libresolv.a. 1057 1058IRIX 1059 The header files on SGI IRIX are completely prototyped, and as 1060 a result you can sometimes get some warning messages during 1061 compilation. These can be ignored. There are two errors in 1062 deliver only if you are using gcc, both of the form ``warning: 1063 passing arg N of `execve' from incompatible pointer type''. 1064 Also, if you compile with -DNIS, you will get a complaint 1065 about a declaration of struct dom_binding in a prototype 1066 when compiling map.c; this is not important because the 1067 function being prototyped is not used in that file. 1068 1069 In order to compile sendmail you will have had to install 1070 the developers' option in order to get the necessary include 1071 files. 1072 1073 If you compile with -lmalloc (the fast memory allocator), you may 1074 get warning messages such as the following: 1075 1076 ld32: WARNING 85: definition of _calloc in /usr/lib32/libmalloc.so 1077 preempts that definition in /usr/lib32/mips3/libc.so. 1078 ld32: WARNING 85: definition of _malloc in /usr/lib32/libmalloc.so 1079 preempts that definition in /usr/lib32/mips3/libc.so. 1080 ld32: WARNING 85: definition of _realloc in /usr/lib32/libmalloc.so 1081 preempts that definition in /usr/lib32/mips3/libc.so. 1082 ld32: WARNING 85: definition of _free in /usr/lib32/libmalloc.so 1083 preempts that definition in /usr/lib32/mips3/libc.so. 1084 ld32: WARNING 85: definition of _cfree in /usr/lib32/libmalloc.so 1085 preempts that definition in /usr/lib32/mips3/libc.so. 1086 1087 These are unavoidable and innocuous -- just ignore them. 1088 1089 According to Dave Sill <de5@ornl.gov>, there is a version of the 1090 Berkeley DB library patched to run on Irix 6.2 available from 1091 http://reality.sgi.com/ariel/freeware/#db . 1092 1093IRIX 6.x 1094 If you are using XFS filesystem, avoid using the -32 ABI switch to 1095 the cc compiler if possible. 1096 1097 Broken inet_aton and inet_ntoa on IRIX using gcc: There's 1098 a problem with gcc on IRIX, i.e., gcc can't pass structs 1099 less than 16 bits long unless they are 8 bits; IRIX 6.2 has 1100 some other sized structs. See 1101 http://www.bitmechanic.com/mail-archives/mysql/current/0418.html 1102 This problem seems to be fixed by gcc v2.95.2, gcc v2.8.1 1103 is reported as broken. Check your gcc version for this bug 1104 before installing sendmail. 1105 1106IRIX 6.4 1107 The IRIX 6.5.4 version of /bin/m4 does not work properly with 1108 sendmail. Either install fw_m4.sw.m4 off the Freeware_May99 CD and 1109 use /usr/freeware/bin/m4 or install and use GNU m4. 1110 1111NeXT or NEXTSTEP 1112 NEXTSTEP 3.3 and earlier ship with the old DBM library. Also, 1113 Berkeley DB does not currently run on NEXTSTEP. 1114 1115 If you are compiling on NEXTSTEP, you will have to create an 1116 empty file "unistd.h" and create a file "dirent.h" containing: 1117 1118 #include <sys/dir.h> 1119 #define dirent direct 1120 1121 (devtools/OS/NeXT should try to do both of these for you.) 1122 1123 Apparently, there is a bug in getservbyname on Nextstep 3.0 1124 that causes it to fail under some circumstances with the 1125 message "SYSERR: service "smtp" unknown" logged. You should 1126 be able to work around this by including the line: 1127 1128 OOPort=25 1129 1130 in your .cf file. 1131 1132BSDI (BSD/386) 1.0, NetBSD 0.9, FreeBSD 1.0 1133 The "m4" from BSDI won't handle the config files properly. 1134 I haven't had a chance to test this myself. 1135 1136 The M4 shipped in FreeBSD and NetBSD 0.9 don't handle the config 1137 files properly. One must use either GNU m4 1.1 or the PD-M4 1138 recently posted in comp.os.386bsd.bugs (and maybe others). 1139 NetBSD-current includes the PD-M4 (as stated in the NetBSD file 1140 CHANGES). 1141 1142 FreeBSD 1.0 RELEASE has uname(2) now. Use -DUSEUNAME in order to 1143 use it (look into devtools/OS/FreeBSD). NetBSD-current may have 1144 it too but it has not been verified. 1145 1146 The latest version of Berkeley DB uses a different naming 1147 scheme than the version that is supplied with your release. This 1148 means you will be able to use the current version of Berkeley DB 1149 with sendmail as long you use the new db.h when compiling 1150 sendmail and link it against the new libdb.a or libdb.so. You 1151 should probably keep the original db.h in /usr/include and the 1152 new db.h in /usr/local/include. 1153 11544.3BSD 1155 If you are running a "virgin" version of 4.3BSD, you'll have 1156 a very old resolver and be missing some header files. The 1157 header files are simple -- create empty versions and everything 1158 will work fine. For the resolver you should really port a new 1159 version (4.8.3 or later) of the resolver; 4.9 is available on 1160 gatekeeper.DEC.COM in pub/BSD/bind/4.9. If you are really 1161 determined to continue to use your old, buggy version (or as 1162 a shortcut to get sendmail working -- I'm sure you have the 1163 best intentions to port a modern version of BIND), you can 1164 copy ../contrib/oldbind.compat.c into sendmail and add the 1165 following to devtools/Site/site.config.m4: 1166 1167 APPENDDEF(`confOBJADD', `oldbind.compat.o') 1168 1169OpenBSD (up to 2.9 Release), NetBSD, FreeBSD (up to 4.3-RELEASE) 1170 m4 from *BSD won't handle libsm/Makefile.m4 properly, since the 1171 maximum length for strings is too short. You need to use GNU m4 1172 or patch m4, see for example: 1173 http://FreeBSD.org/cgi/cvsweb.cgi/src/usr.bin/m4/eval.c.diff?r1=1.11&r2=1.12 1174 1175A/UX 1176 Date: Tue, 12 Oct 1993 18:28:28 -0400 (EDT) 1177 From: "Eric C. Hagberg" <hagberg@med.cornell.edu> 1178 Subject: Fix for A/UX ndbm 1179 1180 I guess this isn't really a sendmail bug, however, it is something 1181 that A/UX users should be aware of when compiling sendmail 8.6. 1182 1183 Apparently, the calls that sendmail is using to the ndbm routines 1184 in A/UX 3.0.x contain calls to "broken" routines, in that the 1185 aliases database will break when it gets "just a little big" 1186 (sorry I don't have exact numbers here, but it broke somewhere 1187 around 20-25 aliases for me.), making all aliases non-functional 1188 after exceeding this point. 1189 1190 What I did was to get the gnu-dbm-1.6 package, compile it, and 1191 then re-compile sendmail with "-lgdbm", "-DNDBM", and using the 1192 ndbm.h header file that comes with the gnu-package. This makes 1193 things behave properly. 1194 [NOTE: see comment above about GDBM] 1195 1196 I suppose porting the New Berkeley DB package is another route, 1197 however, I made a quick attempt at it, and found it difficult 1198 (not easy at least); the gnu-dbm package "configured" and 1199 compiled easily. 1200 1201 [NOTE: Berkeley DB version 2.X runs on A/UX and can be used for 1202 database maps.] 1203 1204SCO Unix 1205 From: Thomas Essebier <tom@stallion.oz.au> 1206 Organisation: Stallion Technologies Pty Ltd. 1207 1208 It will probably help those who are trying to configure sendmail 8.6.9 1209 to know that if they are on SCO, they had better set 1210 OI-dnsrch 1211 or they will core dump as soon as they try to use the resolver. 1212 i.e., although SCO has _res.dnsrch defined, and is kinda BIND 4.8.3, 1213 it does not inititialise it, nor does it understand 'search' in 1214 /etc/named.boot. 1215 - sigh - 1216 1217 According to SCO, the m4 which ships with UnixWare 2.1.2 is broken. 1218 We recommend installing GNU m4 before attempting to build sendmail. 1219 1220 On some versions a bogus error value is listed if connections 1221 time out (large negative number). To avoid this explicitly set 1222 Timeout.connect to a reasonable value (several minutes). 1223 1224DG/UX 1225 Doug Anderson <dlander@afterlife.ncsc.mil> has successfully run 1226 V8 on the DG/UX 5.4.2 and 5.4R3.x platforms under heavy usage. 1227 Originally, the DG /bin/mail program wasn't compatible with 1228 the V8 sendmail, since the DG /bin/mail requires the environment 1229 variable "_FORCE_MAIL_LOCAL_=yes" be set. Version 8.7 now includes 1230 this in the environment before invoking the local mailer. Some 1231 have used procmail to avoid this problem in the past. It works 1232 but some have experienced file locking problems with their DG/UX 1233 ports of procmail. 1234 1235Apollo DomainOS 1236 If you are compiling on Apollo, you will have to create an empty 1237 file "unistd.h" (for DomainOS 10.3 and earlier) and create a file 1238 "dirent.h" containing: 1239 1240 #include <sys/dir.h> 1241 #define dirent direct 1242 1243 (devtools/OS/DomainOS will attempt to do both of these for you.) 1244 1245HP-UX 8.00 1246 Date: Mon, 24 Jan 1994 13:25:45 +0200 1247 From: Kimmo Suominen <Kimmo.Suominen@lut.fi> 1248 Subject: 8.6.5 w/ HP-UX 8.00 on s300 1249 1250 Just compiled and fought with sendmail 8.6.5 on a HP9000/360 (i.e., 1251 a series 300 machine) running HP-UX 8.00. 1252 1253 I was getting segmentation fault when delivering to a local user. 1254 With debugging I saw it was faulting when doing _free@libc... *sigh* 1255 It seems the new implementation of malloc on s300 is buggy as of 8.0, 1256 so I tried out the one in -lmalloc (malloc(3X)). With that it seems 1257 to work just dandy. 1258 1259 When linking, you will get the following error: 1260 1261 ld: multiply defined symbol _freespace in file /usr/lib/libmalloc.a 1262 1263 but you can just ignore it. You might want to add this info to the 1264 README file for the future... 1265 1266Linux 1267 Something broke between versions 0.99.13 and 0.99.14 of Linux: 1268 the flock() system call gives errors. If you are running .14, 1269 you must not use flock. You can do this with -DHASFLOCK=0. 1270 1271 Around the inclusion of bind-4.9.3 & Linux libc-4.6.20, the 1272 initialization of the _res structure changed. If /etc/hosts.conf 1273 was configured as "hosts, bind" the resolver code could return 1274 "Name server failure" errors. This is supposedly fixed in 1275 later versions of libc (>= 4.6.29?), and later versions of 1276 sendmail (> 8.6.10) try to work around the problem. 1277 1278 Some older versions (< 4.6.20?) of the libc/include files conflict 1279 with sendmail's version of cdefs.h. Deleting sendmail's version 1280 on those systems should be non-harmful, and new versions don't care. 1281 1282 NOTE ON LINUX & BIND: By default, the Makefile generated for Linux 1283 includes header files in /usr/local/include and libraries in 1284 /usr/local/lib. If you've installed BIND on your system, the header 1285 files typically end up in the search path and you need to add 1286 "-lresolv" to the LIBS line in your Makefile. Really old versions 1287 may need to include "-l44bsd" as well (particularly if the link phase 1288 complains about missing strcasecmp, strncasecmp or strpbrk). 1289 Complaints about an undefined reference to `__dn_skipname' in 1290 domain.o are a sure sign that you need to add -lresolv to LIBS. 1291 Newer versions of Linux are basically threaded BIND, so you may or 1292 may not see complaints if you accidentally mix BIND 1293 headers/libraries with virginal libc. If you have BIND headers in 1294 /usr/local/include (resolv.h, etc) you *should* be adding -lresolv 1295 to LIBS. Data structures may change and you'd be asking for a 1296 core dump. 1297 1298 A number of problems have been reported regarding the Linux 2.2.0 1299 kernel. So far, these problems have been tracked down to syslog() 1300 and DNS resolution. We believe the problem is with the poll() 1301 implementation in the Linux 2.2.0 kernel and poll()-aware versions 1302 of glib (at least up to 2.0.111). 1303 1304glibc 1305 glibc 2.2.1 (and possibly other versions) changed the value of 1306 __RES in resolv.h but failed to actually provide the IPv6 API 1307 changes that the change implied. Therefore, compiling with 1308 -DNETINET6 fails. 1309 1310 Workarounds: 1311 1) Compile without -DNETINET6 1312 2) Build against a real BIND 8.2.2 include/lib tree 1313 3) Wait for glibc to fix it 1314 1315AIX 4.X 1316 The AIX 4.X linker uses library paths specified during compilation 1317 using -L for run-time shared library searches. Therefore, it is 1318 vital that relative and unsafe directory paths not be using when 1319 compiling sendmail. Because of this danger, by default, compiles 1320 on AIX use the -blibpath option to limit shared libraries to 1321 /usr/lib and /lib. If you need to allow more directories, such as 1322 /usr/local/lib, modify your devtools/Site/site.AIX.4.2.m4, 1323 site.AIX.4.3.m4, and/or site.AIX.4.x.m4 file(s) and set confLDOPTS 1324 approriately. For example: 1325 1326 define(`confLDOPTS', `-blibpath:/usr/lib:/lib:/usr/local/lib') 1327 1328 Be sure to only add (safe) system directories. 1329 1330 The AIX version of GNU ld also exhibits this problem. If you are 1331 using that version, instead of -blibpath, use its -rpath option. 1332 For example: 1333 1334 gcc -Wl,-rpath /usr/lib -Wl,-rpath /lib -Wl,-rpath /usr/local/lib 1335 1336AIX 4.X If the test program t-event (and most others) in libsm fails, 1337 check your compiler settings. It seems that the flags -qnoro or 1338 -qnoroconst on some AIX versions trigger a compiler bug. Check 1339 your compiler settings or use cc instead of xlc. 1340 1341AIX 4.0-4.2, maybe some AIX 4.3 versions 1342 The AIX m4 implements a different mechanism for ifdef which is 1343 inconsistent with other versions of m4. Therefore, it will not 1344 work properly with the sendmail Build architecture or m4 1345 configuration method. To work around this problem, please use 1346 GNU m4 from ftp://ftp.gnu.org/pub/gnu/. 1347 The problem seems to be solved in AIX 4.3.3 at least. 1348 1349AIX 4.3.3 1350 From: Valdis.Kletnieks@vt.edu 1351 Date: Sun, 02 Jul 2000 03:58:02 -0400 1352 1353 Under AIX 4.3.3, after applying bos.adt.include 4.3.3.12 to close the 1354 BIND 8.2.2 security holes, you can no longer build with -DNETINET6 1355 because they changed the value of __RES in resolv.h but failed to 1356 actually provide the API changes that the change implied. 1357 1358 Workarounds: 1359 1) Compile without -DNETINET6 1360 2) Build against a real BIND 8.2.2 include/lib tree 1361 3) Wait for IBM to fix it 1362 1363AIX 3.x 1364 This version of sendmail does not support MB, MG, and MR resource 1365 records, which are supported by AIX sendmail. 1366 1367 Several people have reported that the IBM-supplied named returns 1368 fairly random results -- the named should be replaced. It is not 1369 necessary to replace the resolver, which will simplify installation. 1370 A new BIND resolver can be found at http://www.isc.org/isc/. 1371 1372AIX 3.1.x 1373 The supplied load average code only works correctly for AIX 3.2.x. 1374 For 3.1, use -DLA_TYPE=LA_SUBR and get the latest ``monitor'' 1375 package by Jussi Maki <jmaki@hut.fi> from ftp.funet.fi in the 1376 directory pub/unix/AIX/rs6000/monitor-1.12.tar.Z; use the loadavgd 1377 daemon, and the getloadavg subroutine supplied with that package. 1378 If you don't care about load average throttling, just turn off 1379 load average checking using -DLA_TYPE=LA_ZERO. 1380 1381RISC/os 1382 RISC/os from MIPS is a merged AT&T/Berkeley system. When you 1383 compile on that platform you will get duplicate definitions 1384 on many files. You can ignore these. 1385 1386System V Release 4 Based Systems 1387 There is a single devtools OS that is intended for all SVR4-based 1388 systems (built from devtools/OS/SVR4). It defines __svr4__, 1389 which is predefined by some compilers. If your compiler already 1390 defines this compile variable, you can delete the definition from 1391 the generated Makefile or create a devtools/Site/site.config.m4 1392 file. 1393 1394 It's been tested on Dell Issue 2.2. 1395 1396DELL SVR4 1397 Date: Mon, 06 Dec 1993 10:42:29 EST 1398 From: "Kimmo Suominen" <kim@grendel.lut.fi> 1399 Message-ID: <2d0352f9.lento29@lento29.UUCP> 1400 To: eric@cs.berkeley.edu 1401 Cc: sendmail@cs.berkeley.edu 1402 Subject: Notes for DELL SVR4 1403 1404 Eric, 1405 1406 Here are some notes for compiling Sendmail 8.6.4 on DELL SVR4. I ran 1407 across these things when helping out some people who contacted me by 1408 e-mail. 1409 1410 1) Use gcc 2.4.5 (or later?). Dell distributes gcc 2.1 with their 1411 Issue 2.2 Unix. It is too old, and gives you problems with 1412 clock.c, because sigset_t won't get defined in <sys/signal.h>. 1413 This is due to a problematic protection rule in there, and is 1414 fixed with gcc 2.4.5. 1415 1416 2) If you don't use the new Berkeley DB (-DNEWDB), then you need 1417 to add "-lc -lucb" to the libraries to link with. This is because 1418 the -ldbm distributed by Dell needs the bcopy, bcmp and bzero 1419 functions. It is important that you specify both libraries in 1420 the given order to be sure you only get the BSTRING functions 1421 from the UCB library (and not the signal routines etc.). 1422 1423 3) Don't leave out "-lelf" even if compiling with "-lc -lucb". 1424 The UCB library also has another copy of the nlist routines, 1425 but we do want the ones from "-lelf". 1426 1427 If anyone needs a compiled gcc 2.4.5 and/or a ported DB library, they 1428 can use anonymous ftp to fetch them from lut.fi in the /kim directory. 1429 They are copies of what I use on grendel.lut.fi, and offering them 1430 does not imply that I would also support them. I have sent the DB 1431 port for SVR4 back to Keith Bostic for inclusion in the official 1432 distribution, but I haven't heard anything from him as of today. 1433 1434 - gcc-2.4.5-svr4.tar.gz (gcc 2.4.5 and the corresponding libg++) 1435 - db-1.72.tar.gz (with source, objects and a installed copy) 1436 1437 Cheers 1438 + Kim 1439 -- 1440 * Kimmo.Suominen@lut.fi * SysVr4 enthusiast at GRENDEL.LUT.FI * 1441 * KIM@FINFILES.BITNET * Postmaster and Hostmaster at LUT.FI * 1442 * + 358 200 865 718 * Unix area moderator at NIC.FUNET.FI * 1443 1444ConvexOS 10.1 and below 1445 In order to use the name server, you must create the file 1446 /etc/use_nameserver. If this file does not exist, the call 1447 to res_init() will fail and you will have absolutely no 1448 access to DNS, including MX records. 1449 1450Amdahl UTS 2.1.5 1451 In order to get UTS to work, you will have to port BIND 4.9. 1452 The vendor's BIND is reported to be ``totally inadequate.'' 1453 See sendmail/contrib/AmdahlUTS.patch for the patches necessary 1454 to get BIND 4.9 compiled for UTS. 1455 1456UnixWare 1457 According to Alexander Kolbasov <sasha@unitech.gamma.ru>, 1458 the m4 on UnixWare 2.0 (still in Beta) will core dump on the 1459 config files. GNU m4 and the m4 from UnixWare 1.x both work. 1460 1461 According to Larry Rosenman <ler@lerami.lerctr.org>: 1462 1463 UnixWare 2.1.[23]'s m4 chokes (not obviously) when 1464 processing the 8.9.0 cf files. 1465 1466 I had a LOCAL_RULE_0 that wound up AFTER the 1467 SBasic_check_rcpt rules using the SCO supplied M4. 1468 GNU M4 works fine. 1469 1470UNICOS 8.0.3.4 1471 Some people have reported that the -O flag on UNICOS can cause 1472 problems. You may want to turn this off if you have problems 1473 running sendmail. Reported by Jerry G. DeLapp <jgd@acl.lanl.gov>. 1474 1475Darwin/Mac OS X (10.X.X) 1476 The linker errors produced regarding getopt() and it's associated 1477 variables can safely be ignored. 1478 1479 From Mike Zimmerman <zimmy@torrentnet.com>: 1480 1481 From scratch here is what Darwin users need to do to the standard 1482 10.0.0, 10.0.1 install to get sendmail working. 1483 From http://www.macosx.com/forums/showthread.php?s=6dac0e9e1f3fd118a4870a8a9b559491&threadid=2242: 1484 1. chmod g-w / /private /private/etc 1485 2. Properly set HOSTNAME in /etc/hostconfig to your FQDN: 1486 HOSTNAME=-my.domain.com- 1487 3. Edit /etc/rc.boot: 1488 hostname my.domain.com 1489 domainname domain.com 1490 4. Edit /System/Library/StartupItems/Sendmail/Sendmail: 1491 Remove the "&" after the sendmail command: 1492 /usr/sbin/sendmail -bd -q1h 1493 1494 From Carsten Klapp <carsten.klapp@home.com>: 1495 1496 The easiest workaround is to remove the group-writable permission 1497 for the root directory and the symbolic /etc inherits this 1498 change. While this does fix sendmail, the unfortunate side-effect 1499 is the OS X admin will no longer be able to manipulate icons in the 1500 top level of the Startup disk unless logged into the GUI as the 1501 superuser. 1502 1503 In applying the alternate workaround, care must be taken while 1504 swapping the symlink /etc with the directory /private/etc. In all 1505 likelihood any admin who is concerned with this sendmail error has 1506 enough experience to not accidentally harm anything in the process. 1507 1508 a. Swap the /etc symlink with /private/etc (as superuser): 1509 rm /etc 1510 mv /private/etc /etc 1511 ln -s /etc /private/etc 1512 1513 b. Set / to group unwritable (as superuser): 1514 chmod g-w / 1515 1516GNU getopt 1517 I'm told that GNU getopt has a problem in that it gets confused 1518 by the double call. Use the version in conf.c instead. 1519 1520BIND 4.9.2 and Ultrix 1521 If you are running on Ultrix, be sure you read conf/Info.Ultrix 1522 in the BIND distribution very carefully -- there is information 1523 in there that you need to know in order to avoid errors of the 1524 form: 1525 1526 /lib/libc.a(gethostent.o): sethostent: multiply defined 1527 /lib/libc.a(gethostent.o): endhostent: multiply defined 1528 /lib/libc.a(gethostent.o): gethostbyname: multiply defined 1529 /lib/libc.a(gethostent.o): gethostbyaddr: multiply defined 1530 1531 during the link stage. 1532 1533BIND 8.X 1534 BIND 8.X returns HOST_NOT_FOUND instead of TRY_AGAIN on temporary 1535 DNS failures when trying to find the hostname associated with an IP 1536 address (gethostbyaddr()). This can cause problems as 1537 $&{client_name} based lookups in class R ($=R) and the access 1538 database won't succeed. 1539 1540 This will be fixed in BIND 8.2.1. For earlier versions, this can 1541 be fixed by making "dns" the last name service queried for host 1542 resolution in /etc/irs.conf: 1543 1544 hosts local continue 1545 hosts dns 1546 1547strtoul 1548 Some compilers (notably gcc) claim to be ANSI C but do not 1549 include the ANSI-required routine "strtoul". If your compiler 1550 has this problem, you will get an error in srvrsmtp.c on the 1551 code: 1552 1553 # ifdef defined(__STDC__) && !defined(BROKEN_ANSI_LIBRARY) 1554 e->e_msgsize = strtoul(vp, (char **) NULL, 10); 1555 # else 1556 e->e_msgsize = strtol(vp, (char **) NULL, 10); 1557 # endif 1558 1559 You can use -DBROKEN_ANSI_LIBRARY to get around this problem. 1560 1561Listproc 6.0c 1562 Date: 23 Sep 1995 23:56:07 GMT 1563 Message-ID: <95925101334.~INN-AUMa00187.comp-news@dl.ac.uk> 1564 From: alansz@mellers1.psych.berkeley.edu (Alan Schwartz) 1565 Subject: Listproc 6.0c + Sendmail 8.7 [Helpful hint] 1566 1567 Just upgraded to sendmail 8.7, and discovered that listproc 6.0c 1568 breaks, because it, by default, sends a blank "HELO" rather than 1569 a "HELO hostname" when using the 'system' or 'telnet' mailmethod. 1570 1571 The fix is to include -DZMAILER in the compilation, which will 1572 cause it to use "HELO hostname" (which Z-mail apparently requires 1573 as well. :) 1574 1575OpenSSL 1576 OpenSSL versions prior to 0.9.6 use a macro named Free which 1577 conflicts with existing macro names on some platforms, such as 1578 AIX. 1579 Do not use 0.9.3, but OpenSSL 0.9.5a or later if compatible with 1580 0.9.5a. 1581 1582PH 1583 PH support is provided by Mark Roth <roth@uiuc.edu>. The map is 1584 described at http://www-dev.cso.uiuc.edu/sendmail/ . 1585 1586 NOTE: The "spacedname" pseudo-field which was used by earlier 1587 versions of the PH map code is no longer supported! See the URL 1588 listed above for more information. 1589 1590 Please contact Mark Roth for support and questions regarding the 1591 map. 1592 1593TCP Wrappers 1594 If you are using -DTCPWRAPPERS to get TCP Wrappers support you will 1595 also need to install libwrap.a and modify your site.config.m4 file 1596 or the generated Makefile to include -lwrap in the LIBS line 1597 (make sure that INCDIRS and LIBDIRS point to where the tcpd.h and 1598 libwrap.a can be found). 1599 1600 TCP Wrappers is available at ftp://ftp.porcupine.org/pub/security/. 1601 1602 If you have alternate MX sites for your site, be sure that all of 1603 your MX sites reject the same set of hosts. If not, a bad guy whom 1604 you reject will connect to your site, fail, and move on to the next 1605 MX site, which will accept the mail for you and forward it on to you. 1606 1607Regular Expressions (MAP_REGEX) 1608 If sendmail linking fails with: 1609 1610 undefined reference to 'regcomp' 1611 1612 or sendmail gives an error about a regular expression with: 1613 1614 pattern-compile-error: : Operation not applicable 1615 1616 Your libc does not include a running version of POSIX-regex. Use 1617 librx or regex.o from the GNU Free Software Foundation, 1618 ftp://ftp.gnu.org/pub/gnu/rx-?.?.tar.gz or 1619 ftp://ftp.gnu.org/pub/gnu/regex-?.?.tar.gz. 1620 You can also use the regex-lib by Henry Spencer, 1621 ftp://ftp.funet.fi/pub/languages/C/spencer/regex.shar.gz 1622 Make sure, your compiler reads regex.h from the distribution, 1623 not from /usr/include, otherwise sendmail will dump a core. 1624 1625 1626+--------------+ 1627| MANUAL PAGES | 1628+--------------+ 1629 1630The manual pages have been written against the -man macros, and 1631should format correctly with any reasonable *roff. 1632 1633 1634+-----------------+ 1635| DEBUGGING HOOKS | 1636+-----------------+ 1637 1638As of 8.6.5, sendmail daemons will catch a SIGUSR1 signal and log 1639some debugging output (logged at LOG_DEBUG severity). The 1640information dumped is: 1641 1642 * The value of the $j macro. 1643 * A warning if $j is not in the set $=w. 1644 * A list of the open file descriptors. 1645 * The contents of the connection cache. 1646 * If ruleset 89 is defined, it is evaluated and the results printed. 1647 1648This allows you to get information regarding the runtime state of the 1649daemon on the fly. This should not be done too frequently, since 1650the process of rewriting may lose memory which will not be recovered. 1651Also, ruleset 89 may call non-reentrant routines, so there is a small 1652non-zero probability that this will cause other problems. It is 1653really only for debugging serious problems. 1654 1655A typical formulation of ruleset 89 would be: 1656 1657 R$* $@ $>0 some test address 1658 1659 1660+-----------------------------+ 1661| DESCRIPTION OF SOURCE FILES | 1662+-----------------------------+ 1663 1664The following list describes the files in this directory: 1665 1666Build Shell script for building sendmail. 1667Makefile A convenience for calling ./Build. 1668Makefile.m4 A template for constructing a makefile based on the 1669 information in the devtools directory. 1670README This file. 1671TRACEFLAGS My own personal list of the trace flags -- not guaranteed 1672 to be particularly up to date. 1673alias.c Does name aliasing in all forms. 1674aliases.5 Man page describing the format of the aliases file. 1675arpadate.c A subroutine which creates ARPANET standard dates. 1676bf.c Routines to implement memory-buffered file system using 1677 hooks provided by libsm now (formerly Torek stdio library). 1678bf.h Buffered file I/O function declarations and 1679 data structure and function declarations for bf.c. 1680collect.c The routine that actually reads the mail into a temp 1681 file. It also does a certain amount of parsing of 1682 the header, etc. 1683conf.c The configuration file. This contains information 1684 that is presumed to be quite static and non- 1685 controversial, or code compiled in for efficiency 1686 reasons. Most of the configuration is in sendmail.cf. 1687conf.h Configuration that must be known everywhere. 1688control.c Routines to implement control socket. 1689convtime.c A routine to sanely process times. 1690daemon.c Routines to implement daemon mode. 1691deliver.c Routines to deliver mail. 1692domain.c Routines that interface with DNS (the Domain Name 1693 System). 1694envelope.c Routines to manipulate the envelope structure. 1695err.c Routines to print error messages. 1696headers.c Routines to process message headers. 1697helpfile An example helpfile for the SMTP HELP command and -bt mode. 1698macro.c The macro expander. This is used internally to 1699 insert information from the configuration file. 1700mailq.1 Man page for the mailq command. 1701main.c The main routine to sendmail. This file also 1702 contains some miscellaneous routines. 1703makesendmail A convenience for calling ./Build. 1704map.c Support for database maps. 1705mci.c Routines that handle mail connection information caching. 1706milter.c MTA portions of the mail filter API. 1707mime.c MIME conversion routines. 1708newaliases.1 Man page for the newaliases command. 1709parseaddr.c The routines which do address parsing. 1710queue.c Routines to implement message queueing. 1711readcf.c The routine that reads the configuration file and 1712 translates it to internal form. 1713recipient.c Routines that manipulate the recipient list. 1714sasl.c Routines to interact with Cyrys-SASL. 1715savemail.c Routines which save the letter on processing errors. 1716sendmail.8 Man page for the sendmail command. 1717sendmail.h Main header file for sendmail. 1718sfsasl.c I/O interface between SASL/TLS and the MTA. 1719sfsasl.h Header file for sfsasl.c. 1720shmticklib.c Routines for shared memory counters. 1721sm_resolve.c Routines for DNS lookups (for DNS map type). 1722sm_resolve.h Header file for sm_resolve.c. 1723srvrsmtp.c Routines to implement server SMTP. 1724stab.c Routines to manage the symbol table. 1725stats.c Routines to collect and post the statistics. 1726statusd_shm.h Data structure and function declarations for shmticklib.c. 1727sysexits.c List of error messages associated with error codes 1728 in sysexits.h. 1729sysexits.h List of error codes for systems that lack their own. 1730timers.c Routines to provide microtimers. 1731timers.h Data structure and function declarations for timers.h. 1732tls.c Routines for TLS. 1733trace.c The trace package. These routines allow setting and 1734 testing of trace flags with a high granularity. 1735udb.c The user database interface module. 1736usersmtp.c Routines to implement user SMTP. 1737util.c Some general purpose routines used by sendmail. 1738version.c The version number and information about this 1739 version of sendmail. 1740 1741(Version $Revision: 1.1.1.12 $, last update $Date: 2002/04/10 03:04:47 $ ) 1742