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Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition by Paul Hudson, Andrew Hudson, Matthew Helmke

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Spamassassin

If you have used email for any length of time, you have likely been subjected to spam, unwanted email sent to thousands of people at the same time. Ubuntu provides an MDA named Spamassassin to assist you in reducing and eliminating unwanted emails. Easily integrated with Procmail and Sendmail, it can be configured for both system-wide and individual use. It uses a combination of rule sets and blacklists (Internet domains known to mail spam).

Enabling Spamassassin is simple. You must first have installed and configured Procmail. The README file in /usr/share/doc/spamassasin provides details on configuring the .procmail file to process mail through Spamassassin. Spamassassin tags probable spam with a unique header; you can then have ...

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