spam filtering

Spam Filtering

Spamarrest: A challenge response spam filtering solution.
Spam filtering services offered by many retail isps, commercial online spam-filtering services (such as spamcop), mda-based procmail scripts, or packages like spamassassin, are all examples of on-network filtering.
Spamassassin: An open-source spam filtering system currently maintained by the apache software foundation, and used by many small-to-medium-size isps, online businesses, and end-users.
orgSpamarrest - A challenge response spam filtering solution.
It is popular on unix based systems and can be used for spam filtering.
It may have some of the same capabilities as a mail transfer agent, but is mainly used for pop3 or imap mail pickup, and may add special capabilities such as spam filtering.
a challenge response spam filtering solution.
Spamassassin is a highly versatile and configurable spam filtering program that identifies spam by testing for certain predefined "fingerprints" and assigning arbitrary numerical scores where it finds them; messages that exceed a user-adjustable threshold score are then tagged as spam.
It may have some of the same capabilities as a mail transfer agent, but is mainly used for POP3 or IMAP mail pickup, and may add special capabilities such as spam filtering.
Integrated spam blockers are the most popular types of spam filtering software.
Procmail is a popular component of unix-based smtp/pop/imap mail systems, and can be configured for spam filtering.

Spam Filtering