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News and Announcements
2005-04-28: SpamAssassin 3.0.3 released! Please visit
the downloads page to get the latest version.
2005-02-09: Receiving twice as many votes as the closest contender,
SpamAssassin took top honors in the Anti-Spam
category of Datamation's Product of the Year 2005.
Note
This is the home page for the open-source Apache SpamAssassin
Project. There are also numerous prepackaged versions
for Windows, commercial versions, and specialized front-ends.
If you were sent here because you received an e-mail message which was
modified by SpamAssassin, please go to this page.
Features
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Wide-spectrum: SpamAssassin uses a wide variety of local and network
tests to identify spam signatures. This makes it harder for spammers to
identify one aspect which they can craft their messages to work around.
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Free software: it is distributed under the same terms and conditions
as other popular open-source software packages such as the Apache web
server.
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Easy to extend: Anti-spam tests and configuration are stored
in plain text, making it easy to configure and add new rules.
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Flexible: SpamAssassin encapsulates its logic in a well-designed,
abstract API so it can be integrated anywhere in the email stream.
The Mail::SpamAssassin classes can
be used on a wide variety of email systems including procmail,
sendmail, Postfix, qmail,
and many others.
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Easy Configuration: SpamAssassin requires very little configuration;
you do not need to continually update it with details of your mail
accounts, mailing list memberships, etc. Once classified, site and
user-specific policies can then be applied against spam. Policies can be
applied on both mail servers and later using the user's own mail
user-agent application.
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