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If neither of these are of help, try posting on the spamassassin-talk mailing list, or check out the unofficial SA rules wiki that several of the more avid custom rule writers use http://www.exit0.us/

Writing better rules

Ok, so you now know the basics of how to make some simple rules, and where to read up to build more complicated rules. So you're all ready to get started, right? Well, not quite yet. Let me take a minute to give you some advice to make good, or at least better rules than you might make on your first try.

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