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Tutorial: Harden Postfix

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The goal of this tutorial is to harden the mail server Postfix used by ISPConfig for internet mail servers where authenticated users are trusted. With this setup you will reject a great amount of spam before it passes into your mail queue, saving a lot of system resources and making your mail server strong against spammers and spam botnets.
 read more | score:8610 | -falko, February 3, 2012
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