sendmail.access

   1 #
   2 # This file controls and allow (or disallow) access to the MTA.
   3 # Check the /usr/share/doc/sendmail-{version}/README.cf file for a description
   4 # of the format of this file. (search for access_db in that file)
   5 # See also /usr/share/doc/sendmail-{version}/examples/.
   6 #
   7 # Don't forget to do
   8 #
   9 #    makemap hash access < access
  10 #
  11 # after modify of this file.
  12 #
  13 # Format:
  14 #    lhs:
  15 #        email addr      <user@[host.domain]>
  16 #        domain name     unless  FEATURE(relay_hosts_only) is used,
  17 #                        then this is a fqdn - and relay-domains ($=R)
  18 #                        must also be fqdns.
  19 #        network number  must end on an octet boundary, or
  20 #                        you're stuck going the longwinded way ;-{
  21 #                        you also should rember about IPv6: prefix
  22 #                        before IPv6 protocol adress.
  23 #        [network no.]   by default, sendmail will refuse any mail
  24 #                        from unresolvable domains. If you have problems
  25 #                        with your resolver you can still accept mail
  26 #                        from unresolvable domains marking their IP address
  27 #                        with '[]' quotes. Other way is add
  28 #                        FEATURE(`accept_unresolvable_domains')
  29 #                        to your sendmail.mc and run
  30 #                        m4 sendmail.mc > sendmail.cf
  31 #
  32 #    rhs:
  33 #        OK              accept mail even if other rules in the
  34 #                        running ruleset would reject it.
  35 #        RELAY           Allow domain to relay through your SMTP
  36 #                        server.  RELAY also serves an implicit
  37 #                        OK for the other checks.
  38 #        REJECT          reject the sender/recipient with a general
  39 #                        purpose message that can be customized.
  40 #                        confREJECT_MSG [550 Access denied] will be issued
  41 #        DISCARD         discard the message completely using
  42 #                        the $#discard mailer.
  43 #        ### any text    where ### is an RFC 821 compliant error code
  44 #                        and "any text" is a message to return for
  45 #                        the command
  46 #                        The string should be quoted to avoid surprises,
  47 #                        e.g., sendmail may remove spaces otherwise.
  48 #                        This type is deprecated, use one the two
  49 #                        ERROR:  entries below instead.
  50 #        ERROR:### any text
  51 #                        as above, but useful to mark error messages as such.
  52 #        ERROR:D.S.N:### any text
  53 #                        where D.S.N is an RFC 1893 compliant error code
  54 #                        and the rest as above.
  55 #
  56 # Examples:
  57 #   spamhost.com                 ERROR:550 "We don't accept mail from spammers"
  58 #   okay.cyberspammer.com        OK
  59 #   sendmail.org                 RELAY
  60 #   128.32                       RELAY
  61 #   IPv6:1:2:3:4:5:6:7           RELAY
  62 #   [127.0.0.3]                  OK
  63 #   [IPv6:1:2:3:4:5:6:7:8]       OK
  64 #   spammer@aol.com              REJECT
  65 #   FREE.STEALTH.MAILER@         550 Spam not accepted
  66 #   spammer@aol.com              REJECT
  67 #   cyberspammer.com             REJECT
  68 #   .de                          REJECT
  69 #   192.168.212                  REJECT
  70 #   IPv6:2002:c0a8:02c7          RELAY
  71 #   IPv6:2002:c0a8:51d2::23f4    REJECT
  72 #
  73 # By default we allow relaying from localhost...
  74 #
  75 localhost.localdomain           RELAY
  76 localhost                       RELAY
  77 127.0.0.1                       RELAY
  78
  79