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SpamAssassin: A practical guide to integration and configuration

You're reading from SpamAssassin: A practical guide to integration and configuration

Product type Book

Published in Sep 2004

Publisher Packt

ISBN-13 9781904811121

Pages 240 pages

Edition 1st Edition

Languages

Concepts

Table of Contents (24) Chapters

SpamAssassin

Credits

About the Author

About the Reviewers

1. Introduction

1. Introducing Spam

2. Spam and Anti-Spam Techniques

3. Open Relays

4. Protecting Email Addresses

5. Detecting Spam

6. Installing SpamAssassin

7. Configuration Files

8. Using SpamAssassin

9. Bayesian Filtering

10. Look and Feel

11. Network Tests

12. Rules

13. Improving Filtering

14. Performance

15. Housekeeping and Reporting

16. Building an Anti-Spam Gateway

17. Email Clients

18. Choosing Other Spam Tools

Glossary

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 with the rule is added to the overall score for that email. Once all the rules have been used, the total score for the email is compared to a threshold value. If the score exceeds the threshold, then the email is marked as spam.

SpamAssassin does...

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