main.cf revision 1.1
1# $NetBSD: main.cf,v 1.1 2009/06/23 10:08:23 tron Exp $ 2# 3# Global Postfix configuration file. This file lists only a subset 4# of all parameters. For the syntax, and for a complete parameter 5# list, see the postconf(5) manual page (command: "man 5 postconf"). 6# 7# For common configuration examples, see BASIC_CONFIGURATION_README 8# and STANDARD_CONFIGURATION_README. To find these documents, use 9# the command "postconf html_directory readme_directory", or go to 10# http://www.postfix.org/. 11# 12# For best results, change no more than 2-3 parameters at a time, 13# and test if Postfix still works after every change. 14 15# SOFT BOUNCE 16# 17# The soft_bounce parameter provides a limited safety net for 18# testing. When soft_bounce is enabled, mail will remain queued that 19# would otherwise bounce. This parameter disables locally-generated 20# bounces, and prevents the SMTP server from rejecting mail permanently 21# (by changing 5xx replies into 4xx replies). However, soft_bounce 22# is no cure for address rewriting mistakes or mail routing mistakes. 23# 24#soft_bounce = no 25 26# LOCAL PATHNAME INFORMATION 27# 28# The queue_directory specifies the location of the Postfix queue. 29# This is also the root directory of Postfix daemons that run chrooted. 30# See the files in examples/chroot-setup for setting up Postfix chroot 31# environments on different UNIX systems. 32# 33queue_directory = /var/spool/postfix 34 35# The command_directory parameter specifies the location of all 36# postXXX commands. 37# 38command_directory = /usr/sbin 39 40# The daemon_directory parameter specifies the location of all Postfix 41# daemon programs (i.e. programs listed in the master.cf file). This 42# directory must be owned by root. 43# 44daemon_directory = /usr/libexec/postfix 45 46# The data_directory parameter specifies the location of Postfix-writable 47# data files (caches, random numbers). This directory must be owned 48# by the mail_owner account (see below). 49# 50data_directory = /var/lib/postfix 51 52# QUEUE AND PROCESS OWNERSHIP 53# 54# The mail_owner parameter specifies the owner of the Postfix queue 55# and of most Postfix daemon processes. Specify the name of a user 56# account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS 57# AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM. In 58# particular, don't specify nobody or daemon. PLEASE USE A DEDICATED 59# USER. 60# 61mail_owner = postfix 62 63# The default_privs parameter specifies the default rights used by 64# the local delivery agent for delivery to external file or command. 65# These rights are used in the absence of a recipient user context. 66# DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER. 67# 68#default_privs = nobody 69 70# INTERNET HOST AND DOMAIN NAMES 71# 72# The myhostname parameter specifies the internet hostname of this 73# mail system. The default is to use the fully-qualified domain name 74# from gethostname(). $myhostname is used as a default value for many 75# other configuration parameters. 76# 77#myhostname = host.domain.tld 78#myhostname = virtual.domain.tld 79 80# The mydomain parameter specifies the local internet domain name. 81# The default is to use $myhostname minus the first component. 82# $mydomain is used as a default value for many other configuration 83# parameters. 84# 85#mydomain = domain.tld 86 87# SENDING MAIL 88# 89# The myorigin parameter specifies the domain that locally-posted 90# mail appears to come from. The default is to append $myhostname, 91# which is fine for small sites. If you run a domain with multiple 92# machines, you should (1) change this to $mydomain and (2) set up 93# a domain-wide alias database that aliases each user to 94# user@that.users.mailhost. 95# 96# For the sake of consistency between sender and recipient addresses, 97# myorigin also specifies the default domain name that is appended 98# to recipient addresses that have no @domain part. 99# 100#myorigin = $myhostname 101#myorigin = $mydomain 102 103# RECEIVING MAIL 104 105# The inet_interfaces parameter specifies the network interface 106# addresses that this mail system receives mail on. By default, 107# the software claims all active interfaces on the machine. The 108# parameter also controls delivery of mail to user@[ip.address]. 109# 110# See also the proxy_interfaces parameter, for network addresses that 111# are forwarded to us via a proxy or network address translator. 112# 113# Note: you need to stop/start Postfix when this parameter changes. 114# 115#inet_interfaces = all 116#inet_interfaces = $myhostname 117#inet_interfaces = $myhostname, localhost 118 119# The proxy_interfaces parameter specifies the network interface 120# addresses that this mail system receives mail on by way of a 121# proxy or network address translation unit. This setting extends 122# the address list specified with the inet_interfaces parameter. 123# 124# You must specify your proxy/NAT addresses when your system is a 125# backup MX host for other domains, otherwise mail delivery loops 126# will happen when the primary MX host is down. 127# 128#proxy_interfaces = 129#proxy_interfaces = 1.2.3.4 130 131# The mydestination parameter specifies the list of domains that this 132# machine considers itself the final destination for. 133# 134# These domains are routed to the delivery agent specified with the 135# local_transport parameter setting. By default, that is the UNIX 136# compatible delivery agent that lookups all recipients in /etc/passwd 137# and /etc/aliases or their equivalent. 138# 139# The default is $myhostname + localhost.$mydomain. On a mail domain 140# gateway, you should also include $mydomain. 141# 142# Do not specify the names of virtual domains - those domains are 143# specified elsewhere (see VIRTUAL_README). 144# 145# Do not specify the names of domains that this machine is backup MX 146# host for. Specify those names via the relay_domains settings for 147# the SMTP server, or use permit_mx_backup if you are lazy (see 148# STANDARD_CONFIGURATION_README). 149# 150# The local machine is always the final destination for mail addressed 151# to user@[the.net.work.address] of an interface that the mail system 152# receives mail on (see the inet_interfaces parameter). 153# 154# Specify a list of host or domain names, /file/name or type:table 155# patterns, separated by commas and/or whitespace. A /file/name 156# pattern is replaced by its contents; a type:table is matched when 157# a name matches a lookup key (the right-hand side is ignored). 158# Continue long lines by starting the next line with whitespace. 159# 160# See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS". 161# 162#mydestination = $myhostname, localhost.$mydomain, localhost 163#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain 164#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, 165# mail.$mydomain, www.$mydomain, ftp.$mydomain 166 167# REJECTING MAIL FOR UNKNOWN LOCAL USERS 168# 169# The local_recipient_maps parameter specifies optional lookup tables 170# with all names or addresses of users that are local with respect 171# to $mydestination, $inet_interfaces or $proxy_interfaces. 172# 173# If this parameter is defined, then the SMTP server will reject 174# mail for unknown local users. This parameter is defined by default. 175# 176# To turn off local recipient checking in the SMTP server, specify 177# local_recipient_maps = (i.e. empty). 178# 179# The default setting assumes that you use the default Postfix local 180# delivery agent for local delivery. You need to update the 181# local_recipient_maps setting if: 182# 183# - You define $mydestination domain recipients in files other than 184# /etc/passwd, /etc/aliases, or the $virtual_alias_maps files. 185# For example, you define $mydestination domain recipients in 186# the $virtual_mailbox_maps files. 187# 188# - You redefine the local delivery agent in master.cf. 189# 190# - You redefine the "local_transport" setting in main.cf. 191# 192# - You use the "luser_relay", "mailbox_transport", or "fallback_transport" 193# feature of the Postfix local delivery agent (see local(8)). 194# 195# Details are described in the LOCAL_RECIPIENT_README file. 196# 197# Beware: if the Postfix SMTP server runs chrooted, you probably have 198# to access the passwd file via the proxymap service, in order to 199# overcome chroot restrictions. The alternative, having a copy of 200# the system passwd file in the chroot jail is just not practical. 201# 202# The right-hand side of the lookup tables is conveniently ignored. 203# In the left-hand side, specify a bare username, an @domain.tld 204# wild-card, or specify a user@domain.tld address. 205# 206#local_recipient_maps = unix:passwd.byname $alias_maps 207#local_recipient_maps = proxy:unix:passwd.byname $alias_maps 208#local_recipient_maps = 209 210# The unknown_local_recipient_reject_code specifies the SMTP server 211# response code when a recipient domain matches $mydestination or 212# ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty 213# and the recipient address or address local-part is not found. 214# 215# The default setting is 550 (reject mail) but it is safer to start 216# with 450 (try again later) until you are certain that your 217# local_recipient_maps settings are OK. 218# 219unknown_local_recipient_reject_code = 550 220 221# TRUST AND RELAY CONTROL 222 223# The mynetworks parameter specifies the list of "trusted" SMTP 224# clients that have more privileges than "strangers". 225# 226# In particular, "trusted" SMTP clients are allowed to relay mail 227# through Postfix. See the smtpd_recipient_restrictions parameter 228# in postconf(5). 229# 230# You can specify the list of "trusted" network addresses by hand 231# or you can let Postfix do it for you (which is the default). 232# 233# By default (mynetworks_style = subnet), Postfix "trusts" SMTP 234# clients in the same IP subnetworks as the local machine. 235# On Linux, this does works correctly only with interfaces specified 236# with the "ifconfig" command. 237# 238# Specify "mynetworks_style = class" when Postfix should "trust" SMTP 239# clients in the same IP class A/B/C networks as the local machine. 240# Don't do this with a dialup site - it would cause Postfix to "trust" 241# your entire provider's network. Instead, specify an explicit 242# mynetworks list by hand, as described below. 243# 244# Specify "mynetworks_style = host" when Postfix should "trust" 245# only the local machine. 246# 247#mynetworks_style = class 248#mynetworks_style = subnet 249#mynetworks_style = host 250 251# Alternatively, you can specify the mynetworks list by hand, in 252# which case Postfix ignores the mynetworks_style setting. 253# 254# Specify an explicit list of network/netmask patterns, where the 255# mask specifies the number of bits in the network part of a host 256# address. 257# 258# You can also specify the absolute pathname of a pattern file instead 259# of listing the patterns here. Specify type:table for table-based lookups 260# (the value on the table right-hand side is not used). 261# 262#mynetworks = 168.100.189.0/28, 127.0.0.0/8 263#mynetworks = $config_directory/mynetworks 264#mynetworks = hash:/etc/postfix/network_table 265 266# The relay_domains parameter restricts what destinations this system will 267# relay mail to. See the smtpd_recipient_restrictions description in 268# postconf(5) for detailed information. 269# 270# By default, Postfix relays mail 271# - from "trusted" clients (IP address matches $mynetworks) to any destination, 272# - from "untrusted" clients to destinations that match $relay_domains or 273# subdomains thereof, except addresses with sender-specified routing. 274# The default relay_domains value is $mydestination. 275# 276# In addition to the above, the Postfix SMTP server by default accepts mail 277# that Postfix is final destination for: 278# - destinations that match $inet_interfaces or $proxy_interfaces, 279# - destinations that match $mydestination 280# - destinations that match $virtual_alias_domains, 281# - destinations that match $virtual_mailbox_domains. 282# These destinations do not need to be listed in $relay_domains. 283# 284# Specify a list of hosts or domains, /file/name patterns or type:name 285# lookup tables, separated by commas and/or whitespace. Continue 286# long lines by starting the next line with whitespace. A file name 287# is replaced by its contents; a type:name table is matched when a 288# (parent) domain appears as lookup key. 289# 290# NOTE: Postfix will not automatically forward mail for domains that 291# list this system as their primary or backup MX host. See the 292# permit_mx_backup restriction description in postconf(5). 293# 294#relay_domains = $mydestination 295 296# INTERNET OR INTRANET 297 298# The relayhost parameter specifies the default host to send mail to 299# when no entry is matched in the optional transport(5) table. When 300# no relayhost is given, mail is routed directly to the destination. 301# 302# On an intranet, specify the organizational domain name. If your 303# internal DNS uses no MX records, specify the name of the intranet 304# gateway host instead. 305# 306# In the case of SMTP, specify a domain, host, host:port, [host]:port, 307# [address] or [address]:port; the form [host] turns off MX lookups. 308# 309# If you're connected via UUCP, see also the default_transport parameter. 310# 311#relayhost = $mydomain 312#relayhost = [gateway.my.domain] 313#relayhost = [mailserver.isp.tld] 314#relayhost = uucphost 315#relayhost = [an.ip.add.ress] 316 317# REJECTING UNKNOWN RELAY USERS 318# 319# The relay_recipient_maps parameter specifies optional lookup tables 320# with all addresses in the domains that match $relay_domains. 321# 322# If this parameter is defined, then the SMTP server will reject 323# mail for unknown relay users. This feature is off by default. 324# 325# The right-hand side of the lookup tables is conveniently ignored. 326# In the left-hand side, specify an @domain.tld wild-card, or specify 327# a user@domain.tld address. 328# 329#relay_recipient_maps = hash:/etc/postfix/relay_recipients 330 331# INPUT RATE CONTROL 332# 333# The in_flow_delay configuration parameter implements mail input 334# flow control. This feature is turned on by default, although it 335# still needs further development (it's disabled on SCO UNIX due 336# to an SCO bug). 337# 338# A Postfix process will pause for $in_flow_delay seconds before 339# accepting a new message, when the message arrival rate exceeds the 340# message delivery rate. With the default 100 SMTP server process 341# limit, this limits the mail inflow to 100 messages a second more 342# than the number of messages delivered per second. 343# 344# Specify 0 to disable the feature. Valid delays are 0..10. 345# 346#in_flow_delay = 1s 347 348# ADDRESS REWRITING 349# 350# The ADDRESS_REWRITING_README document gives information about 351# address masquerading or other forms of address rewriting including 352# username->Firstname.Lastname mapping. 353 354# ADDRESS REDIRECTION (VIRTUAL DOMAIN) 355# 356# The VIRTUAL_README document gives information about the many forms 357# of domain hosting that Postfix supports. 358 359# "USER HAS MOVED" BOUNCE MESSAGES 360# 361# See the discussion in the ADDRESS_REWRITING_README document. 362 363# TRANSPORT MAP 364# 365# See the discussion in the ADDRESS_REWRITING_README document. 366 367# ALIAS DATABASE 368# 369# The alias_maps parameter specifies the list of alias databases used 370# by the local delivery agent. The default list is system dependent. 371# 372# On systems with NIS, the default is to search the local alias 373# database, then the NIS alias database. See aliases(5) for syntax 374# details. 375# 376# If you change the alias database, run "postalias /etc/aliases" (or 377# wherever your system stores the mail alias file), or simply run 378# "newaliases" to build the necessary DBM or DB file. 379# 380# It will take a minute or so before changes become visible. Use 381# "postfix reload" to eliminate the delay. 382# 383#alias_maps = dbm:/etc/aliases 384#alias_maps = hash:/etc/aliases 385#alias_maps = hash:/etc/aliases, nis:mail.aliases 386#alias_maps = netinfo:/aliases 387 388# The alias_database parameter specifies the alias database(s) that 389# are built with "newaliases" or "sendmail -bi". This is a separate 390# configuration parameter, because alias_maps (see above) may specify 391# tables that are not necessarily all under control by Postfix. 392# 393#alias_database = dbm:/etc/aliases 394#alias_database = dbm:/etc/mail/aliases 395#alias_database = hash:/etc/aliases 396#alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases 397 398# ADDRESS EXTENSIONS (e.g., user+foo) 399# 400# The recipient_delimiter parameter specifies the separator between 401# user names and address extensions (user+foo). See canonical(5), 402# local(8), relocated(5) and virtual(5) for the effects this has on 403# aliases, canonical, virtual, relocated and .forward file lookups. 404# Basically, the software tries user+foo and .forward+foo before 405# trying user and .forward. 406# 407#recipient_delimiter = + 408 409# DELIVERY TO MAILBOX 410# 411# The home_mailbox parameter specifies the optional pathname of a 412# mailbox file relative to a user's home directory. The default 413# mailbox file is /var/spool/mail/user or /var/mail/user. Specify 414# "Maildir/" for qmail-style delivery (the / is required). 415# 416#home_mailbox = Mailbox 417#home_mailbox = Maildir/ 418 419# The mail_spool_directory parameter specifies the directory where 420# UNIX-style mailboxes are kept. The default setting depends on the 421# system type. 422# 423#mail_spool_directory = /var/mail 424#mail_spool_directory = /var/spool/mail 425 426# The mailbox_command parameter specifies the optional external 427# command to use instead of mailbox delivery. The command is run as 428# the recipient with proper HOME, SHELL and LOGNAME environment settings. 429# Exception: delivery for root is done as $default_user. 430# 431# Other environment variables of interest: USER (recipient username), 432# EXTENSION (address extension), DOMAIN (domain part of address), 433# and LOCAL (the address localpart). 434# 435# Unlike other Postfix configuration parameters, the mailbox_command 436# parameter is not subjected to $parameter substitutions. This is to 437# make it easier to specify shell syntax (see example below). 438# 439# Avoid shell meta characters because they will force Postfix to run 440# an expensive shell process. Procmail alone is expensive enough. 441# 442# IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN 443# ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER. 444# 445#mailbox_command = /some/where/procmail 446#mailbox_command = /some/where/procmail -a "$EXTENSION" 447 448# The mailbox_transport specifies the optional transport in master.cf 449# to use after processing aliases and .forward files. This parameter 450# has precedence over the mailbox_command, fallback_transport and 451# luser_relay parameters. 452# 453# Specify a string of the form transport:nexthop, where transport is 454# the name of a mail delivery transport defined in master.cf. The 455# :nexthop part is optional. For more details see the sample transport 456# configuration file. 457# 458# NOTE: if you use this feature for accounts not in the UNIX password 459# file, then you must update the "local_recipient_maps" setting in 460# the main.cf file, otherwise the SMTP server will reject mail for 461# non-UNIX accounts with "User unknown in local recipient table". 462# 463#mailbox_transport = lmtp:unix:/file/name 464#mailbox_transport = cyrus 465 466# The fallback_transport specifies the optional transport in master.cf 467# to use for recipients that are not found in the UNIX passwd database. 468# This parameter has precedence over the luser_relay parameter. 469# 470# Specify a string of the form transport:nexthop, where transport is 471# the name of a mail delivery transport defined in master.cf. The 472# :nexthop part is optional. For more details see the sample transport 473# configuration file. 474# 475# NOTE: if you use this feature for accounts not in the UNIX password 476# file, then you must update the "local_recipient_maps" setting in 477# the main.cf file, otherwise the SMTP server will reject mail for 478# non-UNIX accounts with "User unknown in local recipient table". 479# 480#fallback_transport = lmtp:unix:/file/name 481#fallback_transport = cyrus 482#fallback_transport = 483 484# The luser_relay parameter specifies an optional destination address 485# for unknown recipients. By default, mail for unknown@$mydestination, 486# unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned 487# as undeliverable. 488# 489# The following expansions are done on luser_relay: $user (recipient 490# username), $shell (recipient shell), $home (recipient home directory), 491# $recipient (full recipient address), $extension (recipient address 492# extension), $domain (recipient domain), $local (entire recipient 493# localpart), $recipient_delimiter. Specify ${name?value} or 494# ${name:value} to expand value only when $name does (does not) exist. 495# 496# luser_relay works only for the default Postfix local delivery agent. 497# 498# NOTE: if you use this feature for accounts not in the UNIX password 499# file, then you must specify "local_recipient_maps =" (i.e. empty) in 500# the main.cf file, otherwise the SMTP server will reject mail for 501# non-UNIX accounts with "User unknown in local recipient table". 502# 503#luser_relay = $user@other.host 504#luser_relay = $local@other.host 505#luser_relay = admin+$local 506 507# JUNK MAIL CONTROLS 508# 509# The controls listed here are only a very small subset. The file 510# SMTPD_ACCESS_README provides an overview. 511 512# The header_checks parameter specifies an optional table with patterns 513# that each logical message header is matched against, including 514# headers that span multiple physical lines. 515# 516# By default, these patterns also apply to MIME headers and to the 517# headers of attached messages. With older Postfix versions, MIME and 518# attached message headers were treated as body text. 519# 520# For details, see "man header_checks". 521# 522#header_checks = regexp:/etc/postfix/header_checks 523 524# FAST ETRN SERVICE 525# 526# Postfix maintains per-destination logfiles with information about 527# deferred mail, so that mail can be flushed quickly with the SMTP 528# "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld". 529# See the ETRN_README document for a detailed description. 530# 531# The fast_flush_domains parameter controls what destinations are 532# eligible for this service. By default, they are all domains that 533# this server is willing to relay mail to. 534# 535#fast_flush_domains = $relay_domains 536 537# SHOW SOFTWARE VERSION OR NOT 538# 539# The smtpd_banner parameter specifies the text that follows the 220 540# code in the SMTP server's greeting banner. Some people like to see 541# the mail version advertised. By default, Postfix shows no version. 542# 543# You MUST specify $myhostname at the start of the text. That is an 544# RFC requirement. Postfix itself does not care. 545# 546#smtpd_banner = $myhostname ESMTP $mail_name 547#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version) 548 549# PARALLEL DELIVERY TO THE SAME DESTINATION 550# 551# How many parallel deliveries to the same user or domain? With local 552# delivery, it does not make sense to do massively parallel delivery 553# to the same user, because mailbox updates must happen sequentially, 554# and expensive pipelines in .forward files can cause disasters when 555# too many are run at the same time. With SMTP deliveries, 10 556# simultaneous connections to the same domain could be sufficient to 557# raise eyebrows. 558# 559# Each message delivery transport has its XXX_destination_concurrency_limit 560# parameter. The default is $default_destination_concurrency_limit for 561# most delivery transports. For the local delivery agent the default is 2. 562 563#local_destination_concurrency_limit = 2 564#default_destination_concurrency_limit = 20 565 566# DEBUGGING CONTROL 567# 568# The debug_peer_level parameter specifies the increment in verbose 569# logging level when an SMTP client or server host name or address 570# matches a pattern in the debug_peer_list parameter. 571# 572debug_peer_level = 2 573 574# The debug_peer_list parameter specifies an optional list of domain 575# or network patterns, /file/name patterns or type:name tables. When 576# an SMTP client or server host name or address matches a pattern, 577# increase the verbose logging level by the amount specified in the 578# debug_peer_level parameter. 579# 580#debug_peer_list = 127.0.0.1 581#debug_peer_list = some.domain 582 583# The debugger_command specifies the external command that is executed 584# when a Postfix daemon program is run with the -D option. 585# 586# Use "command .. & sleep 5" so that the debugger can attach before 587# the process marches on. If you use an X-based debugger, be sure to 588# set up your XAUTHORITY environment variable before starting Postfix. 589# 590debugger_command = 591 PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin 592 ddd $daemon_directory/$process_name $process_id & sleep 5 593 594# If you can't use X, use this to capture the call stack when a 595# daemon crashes. The result is in a file in the configuration 596# directory, and is named after the process name and the process ID. 597# 598# debugger_command = 599# PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont; 600# echo where) | gdb $daemon_directory/$process_name $process_id 2>&1 601# >$config_directory/$process_name.$process_id.log & sleep 5 602# 603# Another possibility is to run gdb under a detached screen session. 604# To attach to the screen sesssion, su root and run "screen -r 605# <id_string>" where <id_string> uniquely matches one of the detached 606# sessions (from "screen -list"). 607# 608# debugger_command = 609# PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen 610# -dmS $process_name gdb $daemon_directory/$process_name 611# $process_id & sleep 1 612 613# INSTALL-TIME CONFIGURATION INFORMATION 614# 615# The following parameters are used when installing a new Postfix version. 616# 617# sendmail_path: The full pathname of the Postfix sendmail command. 618# This is the Sendmail-compatible mail posting interface. 619# 620sendmail_path = 621 622# newaliases_path: The full pathname of the Postfix newaliases command. 623# This is the Sendmail-compatible command to build alias databases. 624# 625newaliases_path = 626 627# mailq_path: The full pathname of the Postfix mailq command. This 628# is the Sendmail-compatible mail queue listing command. 629# 630mailq_path = 631 632# setgid_group: The group for mail submission and queue management 633# commands. This must be a group name with a numerical group ID that 634# is not shared with other accounts, not even with the Postfix account. 635# 636setgid_group = 637 638# html_directory: The location of the Postfix HTML documentation. 639# 640html_directory = 641 642# manpage_directory: The location of the Postfix on-line manual pages. 643# 644manpage_directory = 645 646# sample_directory: The location of the Postfix sample configuration files. 647# This parameter is obsolete as of Postfix 2.1. 648# 649sample_directory = 650 651# readme_directory: The location of the Postfix README files. 652# 653readme_directory = 654