1. Introduction
1.1 How SpamAssassin Works
1.2 Organization of SpamAssassin
1.3 Mailers and SpamAssassin
1.4 The Politics of Scanning
2. SpamAssassin Basics
2.1 Prerequisites
2.2 Building SpamAssassin
2.3 Invoking SpamAssassin with procmail
2.4 Using spamc/spamd
2.5 Invoking SpamAssassin in a Perl Script
2.6 SpamAssassin and the End User
3. Rules
3.1 The Anatomy of a Test
3.2 Modifying the Score of a Test
3.3 Writing Your Own Tests
3.4 The Built-in Tests
3.5 Whitelists and Blacklists
4. The Learning System
4.1 Autowhitelisting
4.2 Bayesian Filtering
5. Integrating with sendmail
5.1 Spam-Checking at Delivery
5.2 Spam-Checking During SMTP
5.3 Building a Spam-Checking Gateway
6. Integrating with Postfix
6.1 Postfix Architecture
6.2 Spam-Checking During Local Delivery
6.3 Spam-Checking All Incoming Mail
6.4 Building a Spam-Checking Gateway
7. Integrating with qmail
7.1 qmail Architecture
7.2 Spam-Checking During Local Delivery
7.3 Spam-Checking All Incoming Mail
7.4 Building a Spam-Checking Gateway
8. Integrating with Exim
8.1 Spam-Checking via procmail
8.2 Spam-Checking All Incoming Mail
8.3 Using Routers and Transports
8.4 Using exiscan
8.5 Using sa-exim
8.6 Building a Spam-Checking Gateway
9. Using as a Proxy
9.1 Using Pop3proxy
9.2 Using SAproxy Pro
