1. Filter spam from incoming mail This package contains a framework to make it easy to filter spam (i.e. junk email) from your incoming mail. It is intended as a user-controlled filter instead of being attached to the MTA as would otherwise be required. All a user has to do is run "spamfilter" and edit one file to set personal information (email addresses, etc.) to have a fully functional spam filter on their incoming mail. Once installed, the filter is infinitely customizable by the user via the rules of procmail. From Debian 3.0r0 APT