Defending Your Site Against Spam, Part 2 (O'Reilly)
[Posted July 30, 2003 by cook]
Dru Nelson
explains qmail spam filtering on O'Reilly.
"This article is the second and final installment describing my efforts to defend my systems from spam. The
first article explains some necessary concepts and terminology. This article will dig more into the details of an actual implementation with my mail system."
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