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:
Whitelist support was extended. A primitive token reassembly logic was implemented to get "Cialis" from "C i a l i s", for example. Messages to be trained can be forwarded to ham@yourdomain and spam@yourdomain too. The username/uid versus email address query was redesigned. You can store these assignments in either a MySQL database or in an LDAP database/Active Directory. A new Web UI was added to replace the CGI applications. The LDAP admin part is not ready yet, but it's pretty usable. The qcache and external store support were temporarily disabled.
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11-04-2008
