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$OpenBSD: README,v 1.5 2008/09/27 19:17:10 martynas Exp $
This directory contains the configuration files for sendmail(8) and
spamd(8). The source for the .cf files lives in /usr/share/sendmail/cf.
You should make changes in the corresponding .mc file and not edit
the .cf files directly. Useful information may be found in
/usr/share/sendmail/README, /usr/share/sendmail/TUNING, and
/usr/share/doc/smm/08.sendmailop/op.me. For details on enabling
encrypted SMTP, see the starttls(8) man page.
Sendmail configuration files:
localhost.cf Built from /usr/share/sendmail/cf/openbsd-localhost.mc.
Only allows connections from the local host, not
the network at large. This is the default
configuration file used on OpenBSD. See afterboot(8)
for more information.
sendmail.cf Built from /usr/share/sendmail/cf/openbsd-proto.mc.
A more full-featured configuration file that
allows SMTP connections from the internet.
submit.cf Built from /usr/share/sendmail/cf/submit.mc.
Used when sendmail is invoked directly from
the command line to send mail (for instance,
when called by mail(1)).
Other files used by sendmail(8) in this directory include:
access Access database (blacklist, whitelist, etc).
aliases System aliases database.
genericstable Used to rewrite the From: line to a generic form.
Most often used to map login name -> First.Last
name in outgoing messages.
helpfile Help file for sendmail(8).
local-host-names List of other hostnames to treat as local.
You do not need to list the system hostname,
the name(s) associated with any active network
interface or a CNAME that points to one of
those names. This file is read only at startup
or when sendmail(8) is sent SIGHUP.
mailertable Used to override routing for particular (non-local)
domains.
relay-domains List of other domains to relay mail for.
By default, sendmail(8) will not relay for
foreign domains--if the mail is not destined
for (or sent by) a user in the local domain it
will be rejected. This file is read only at
startup or when sendmail(8) is sent SIGHUP.
trusted-users This file contains a list of users (one per
line) that may set their envelope "from"
address to a different user via "sendmail
-f". Common values include "majordomo",
"mailman" and "www". In other words, if a
daemon (or mailing list manager) sends mail
purporting to be from a different user, the
user it runs as should be listed here. The
users "root" and "daemon" are implicitly
included in this list. This file is read
only at startup or when sendmail(8) is sent
SIGHUP.
virtusertable Virtual user table; maps incoming mail addresses
to alternate local usernames or aliases.
Spamd configuration files:
spamd.conf The spamd.conf file is read by spamd-setup(8)
to configure blacklists for spamd(8).
Blacklists are lists of addresses of likely
spammers. Mail from these addresses never
reaches the actual mail server, but is
instead redirected to spamd(8) and tarpitted.
Note that by default, only sendmail.cf will use the access, local-host-names,
mailertable, relay-domains, userdb, and virtusertable files.
These files are not used by the default localhost.cf or submit.cf
since they are generally not needed for localhost-only configs.
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