1# $FreeBSD: head/etc/mail/README 96210 2002-05-08 05:17:46Z gshapiro $
| 1# $FreeBSD: head/etc/mail/README 97131 2002-05-22 16:37:32Z gshapiro $
|
2
3 Sendmail Processes
4
5As of sendmail 8.12, in order to improve security, the sendmail binary no
6longer needs to be set-user-ID root. Instead, a set-group-ID binary
7accepts command line mail and relays it to a full mail transfer agent via
8SMTP. A group writable client mail queue (/var/spool/clientmqueue/ by
9default) holds the mail if an MTA can not be contacted.
10
11To accomplish this, under the default setup, an MTA must be listening on
12localhost port 25. If the rc.conf sendmail_enable option is set to "NO",
13a sendmail daemon will still be started and bound only to the localhost
| 2
3 Sendmail Processes
4
5As of sendmail 8.12, in order to improve security, the sendmail binary no
6longer needs to be set-user-ID root. Instead, a set-group-ID binary
7accepts command line mail and relays it to a full mail transfer agent via
8SMTP. A group writable client mail queue (/var/spool/clientmqueue/ by
9default) holds the mail if an MTA can not be contacted.
10
11To accomplish this, under the default setup, an MTA must be listening on
12localhost port 25. If the rc.conf sendmail_enable option is set to "NO",
13a sendmail daemon will still be started and bound only to the localhost
|
14interface in order to accept command line submitted mail. If this is not
15a desirable solution, it can be disabled using the sendmail_submit_enable
16rc.conf option. However, if both sendmail_enable and sendmail_submit_enable
17are set to "NO", you must do one of two things for command line submitted
18mail:
| 14interface in order to accept command line submitted mail (note that this
15does not work inside jail(2) systems as jails do not allow binding to
16just the localhost interface). If this is not a desirable solution, it
17can be disabled using the sendmail_submit_enable rc.conf option. However,
18if both sendmail_enable and sendmail_submit_enable are set to "NO", you
19must do one of two things for command line submitted mail:
|
19
201. Designate an alternative host for the submission agent to contact
21 by altering /etc/mail/freebsd.submit.mc (or setting SENDMAIL_SUBMIT_MC
22 in /etc/make.conf to an alternate .mc file) and using
23 'make install-submit-cf' in /etc/mail/. Change the FEATURE(msp) line
24 to FEATURE(msp, hostname) where hostname is the fully qualified hostname
25 of the alternative host.
26
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211. Designate an alternative host for the submission agent to contact
22 by altering /etc/mail/freebsd.submit.mc (or setting SENDMAIL_SUBMIT_MC
23 in /etc/make.conf to an alternate .mc file) and using
24 'make install-submit-cf' in /etc/mail/. Change the FEATURE(msp) line
25 to FEATURE(msp, hostname) where hostname is the fully qualified hostname
26 of the alternative host.
27
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