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SpamAssassin by Alistair McDonald

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Anti-Spam Tools

There are many anti-spam tools available. Some are available for free, and others are commercial products. Most anti-spam tools use more than one of the anti-spam techniques. SpamAssassin is the acknowledged leader of the free anti-spam tools and can perform as well as the commercial solutions.

SpamAssassin

SpamAssassin is a popular anti-spam tool that is now a top level project at the Apache Software Foundation.

How SpamAssassin Works

SpamAssassin is based on rules and uses a score-based system. There are a number of rules; each rule performs a test on the email, and each rule has a score. When an email is processed by SpamAssassin, it is tested against each rule. For each rule found to be 'true' for an email, the score associated ...

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