SpamAssassin
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Screenshot
E-mail recognized as spam by SpamAssassin, here in the Novell Evolution email client.
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| Developer(s) | Apache Software Foundation |
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| Stable release |
3.4.1 / April 30, 2015
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| Development status | Active |
| Written in | Perl |
| Operating system | Cross-platform |
| Type | Email spam filter |
| License | Apache License 2.0 |
| Website | spamassassin.apache.org |
SpamAssassin is a computer program used for e-mail spam filtering. SpamAssassin uses a variety of spam-detection techniques, including DNS-based and fuzzy-checksum-based spam detection, Bayesian filtering, external programs, blacklists and online databases. It is released under the Apache License 2.0 and is now part of the Apache Foundation.
The program can be integrated with the mail server to automatically filter all mail for a site. It can also be run by individual users on their own mailbox and integrates with several mail programs. SpamAssassin is highly configurable; if used as a system-wide filter it can still be configured to support per-user preferences.
SpamAssassin was awarded the Linux New Media Award 2006 as the "Best Linux-based Anti-spam Solution".
SpamAssassin was created by Justin Mason, who had maintained a number of patches against an earlier program named filter.plx by Mark Jeftovic, which in turn was begun in August 1997. Mason rewrote all of Jeftovic's code from scratch and uploaded the resulting codebase to SourceForge.net on April 20, 2001. In summer 2004 the project became an Apache Software Foundation project and later officially renamed to Apache SpamAssassin. The project involved algorithms developed in part by Gary Robinson and others.
SpamAssassin is a Perl-based application (Mail::SpamAssassin in CPAN) which is usually used to filter all incoming mail for one or several users. It can be run as a standalone application or as a subprogram of another application (such as Milter, SA-Exim, Exiscan, MailScanner, MIMEDefang, Amavis) or as a client (spamc) that communicates with a daemon (spamd). The client/server or embedded mode of operation has performance benefits, but under certain circumstances may introduce additional security risks.
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Wikipedia