Messaging Server supports the use of SpamAssassin, a freeware mail filter used to identify spam. SpamAssassin consists of a library written in Perl and a set of applications and utilities that can be used to integrate SpamAssassin into messaging systems.
SpamAssassin calculates a score for every message. Scores are calculated by performing a series of tests on message header and body information. Each test either succeeds or fails, and the score is adjusted accordingly. Scores are real numbers and may be positive or negative. Scores that exceed a certain threshold (typically 5.0) are considered to be spam.
SpamAssassin is highly configurable. Tests can be added or removed at any time and the scores of existing tests can be adjusted. This is all done through various configuration files. Further information on SpamAssassin can be found on the SpamAssassin Web site:
The same mechanism used for connecting to the Brightmail spam and virus scanning library can be used to connect to the SpamAssassin spamd server.