A tutorial on how to improve the Postfix anti-spam configuration on Mac OS X 10.4.x/10.5.x Server.
By Athanasios Alexandrides
Mac OS X 10.4.x/10.5.x Mail Services are composed of Postfix, Cyrus, SquirrelMail, Mailman, amavisd-new, SpamAssassin & ClamAV. These components come pre-installed and pre-configured. Unfortunately, the configuration is a very basic one and doesn’t take advantage of the underlying power and in some circumstances can even cripple a server’s performance.
The purpose of this document is to provide instructions on how to improve the mail services configuration to fight spam more efficiently.
This document is written for Mac OS X 10.4.x/10.5.x. It should apply to 10.3.x as well. Be aware though that no particular testing of this procedure has been done on 10.3.x.