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 the maildrop local delivery agent. It also supports creating policy groups to fit the needs of different users.
License: zlib/libpng License
Changes:
A fully functional Web UI that supports both MySQL and LDAP. Policy support. Template-based virus notifications. Training support has been added to the spam quarantine. Token query/update has been redesigned.
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