CG_spam_filter.pl provides a content filter program for the Stalker CommuniGate Pro mail server that seeks to limit the number of outgoing spam your local users can send and incoming spam your system can receive. In essence, it is a throttling script that starts rejecting mail once a certain threshold is reached, such as X messages or recipients per minute. It is difficult to catch spammers until after the fact (when they have already done lots of damage and spammed many users); this is simply an effort to stop them in their tracks in real-time so you can deal with them later.
|Tags||Communications Email Filters|
Release Notes: An option has been added to discard spam messages instead of rejecting them and sending back an undeliverable message.
Release Notes: A bug has been fixed where outgoing messages were not being determined properly when the sender IP resolved in DNS.
Release Notes: A bugfix was made for a problem that caused filter processes to die when they create subprocesses through other means, such as DCC in SpamAssassin.
Release Notes: Support has been added for the KEY request being sent by CommuniGate 4.1. SpamAssassin support now defaults to persistent objects for a smaller memory footprint.
Release Notes: A bug has been fixed where UTF-8 errors and Perl 5.8 were causing messages to bypass filters when using SpamAssassin.