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Free Software Magazine: Filtering Spam with Postfix

Mar 03, 2005, 05:30 (0 Talkback[s])
(Other stories by Kirk Strauser)

"If you are responsible for maintaining an internet-connected mail-server, then you have, no doubt, come to hate spam and the waste of resources which comes with it. When I first decided to lock down my own mail-server, I found many resources that helped in dealing with these unwanted messages. Each of them contained a trick or two, however very few of them were presented in the context of running a real server, and none of them demonstrated an entire filtering framework. In the end I created my own set of rules from the bits and pieces I found, and months of experimentation and fine-tuning resulted in the system detailed in this article.

"This article will show you how to configure a Postfix mail-server in order to reject the wide majority of unwanted incoming 'junk email,' whether they contain unsolicited commercial email (UCE), viruses, or worms..."

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