phPOP3clean is a spam, virus, and worm filtering system for POP3 email accounts. It is designed to run as a cron job and can catch spam based on links to blacklisted IPs, obfuscated words, or blacklisted phrases in the message body as well as attached-image spam, email worms, and corrupted or malformed emails. License: GNU General Public License (GPL) Changes:
This release adds intelligent auto-blacklisting based on DNSBL blacklists and mass-random-IP domain behavior.