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From Apache Wiki <wikidi...@apache.org>
Subject [Spamassassin Wiki] Trivial Update of "OtherTricks" by mperkel
Date Fri, 26 Jan 2007 19:15:49 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Spamassassin Wiki" for change notification.

The following page has been changed by mperkel:
http://wiki.apache.org/spamassassin/OtherTricks

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  Fake MX records can work like greylisting and often much faster. It doesn't require the
installation of new software. What you do is add a fake highest and lowest MX record. Normail
email will retry but spammers often don't. This is especially true of virus infected windows
zombie spam. Here's an example MX configuration.
  {{{
   fake0.domain.com   10
-  realmx.domain.com 20
+  realmx.domain.com  20
   fake1.domain.com   30
  }}}
  The fake records can either be undefined or can point to dead IP addresses or to real IP
addresses with port 25 closed. On the lowest numbered MX be sure it's pointed to a closed
port because if you just use a temporary error then Qmail, which is not RFC compatible, will
never move up to the next MX record.

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