clapf is an email content filter application. It includes a statistical (inverse chi-square) anti-spam module, interfaces to several anti-virus products, a minefield (blackhole), spam quarantine, support for various RBL lists, training utilities, and much more. It can be used as an after queue content filter with Postfix (including as an appliance) or via a local delivery agent (LDA), preferably maildrop.
License: zlib/libpng License
Changes:
The missing MySQL part of the training function has been fixed.
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