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SpamAssassin View Larger Image | Alan Schwartz
O'Reilly Media, Paperback, Published July 2004, 207 pages, ISBN 0596007078 | List Price: $24.95
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The annoyance factor for individual users whose email is crammed with pitches
for pornography, absurd moneymaking schemes, and dubious health products is fierce.
But for organizations, the cost of spam in lost productivity and burned bandwidth
is astronomical. While society is grappling with a solution to the burgeoning
crisis of spam proliferation, the pressure is on system administrators to find
a solution to this massive problem in-house. And fast.
Sys admins can field scores of complaints and spend months testing software
suites that turn out to be too aggressive, too passive, or too complicated to
setup only to discover that SpamAssassin (SA), the leading open source spam-fighting
tool, is free, flexible, powerful, highly-regarded, and remarkably effective.
The drawback? SpamAssassin's lack of published documentation.
SpamAssassin by Alan Schwartz, is the only published resource devoted to SpamAssassin
and how to integrate it effectively into your networks. This clear, concise
guide clarifies the installation, configuration, and use of the SpamAssassin
spam-checking system (versions 2.63 and 3.0) for Unix system administrators
using the Postfix, Sendmail, Exim, or qmail mail servers, helping administrators
make the right integration decision for their particular environments.
It covers concrete advice on how to:
- Customize SpamAssassin's rules, and even create new ones Train SpamAssassin's
Bayesian classifier, a statistical engine for detecting spam, to optimize
it for the sort of email that you typically receive
- Block specific addresses, hosts, and domains using third-party blacklists
like the one maintained by Spamcop.net.
- Whitelist known good sources of email, so that messages from clients, coworkers,
and friends aren't inadvertently lost.
- Configure SpamAssassin to work with newer spam-filtering methods such as
Hashcash (www.hashcash.org) and Sender Policy Framework (SPF).
Sys admins, network administrators, and ISPs pay for spam with hours of experimentation
and tedious junk email management, frayed user tempers, and their sanity. SpamAssassin,
together with this essential book, give you the tools you need to take back
your organization's inboxes.
"Detailed, accurate and informative--recommended for spam-filtering beginners
and experts alike." --Justin Mason, SpamAssassin development team
Table of Contents
Preface
1. Introducing SpamAssassin
How SpamAssassin Works
Organization of SpamAssassin
Mailers and SpamAssassin
The Politics of Scanning
2. SpamAssassin Basics
Prerequisites
Building SpamAssassin
Invoking SpamAssassin with procmail
Using spamc/spamd
Invoking SpamAssassin in a Perl Script
SpamAssassin and the End User
3. SpamAssassin Rules
The Anatomy of a Test
Modifying the Score of a Test
Writing Your Own Tests
The Built-in Tests
Whitelists and Blacklists
4. SpamAssassin as a Learning System
Autowhitelisting
Bayesian Filtering
5. Integrating SpamAssassin with sendmail
Spam-Checking at Delivery
Spam-Checking During SMTP
Building a Spam-Checking Gateway
6. Integrating SpamAssassin with Postfix
Postfix Architecture
Spam-Checking During Local Delivery
Spam-Checking All Incoming Mail
Building a Spam-Checking G ateway
7. Integrating SpamAssassin with qmail
qmail Architecture
Spam-Checking During Local Delivery
Spam-Checking All Incoming Mail
Building a Spam-Checking Gateway
8. Integrating SpamAssassin with Exim
Spam-Checking via procmail
Spam-Checking All Incoming Mail
Using Routers and Transports
Using exiscan
Using sa-exim
Building a Spam-Checking Gateway
9. Using SpamAssassin as a Proxy
Using Pop3proxy
Using SAproxy Pro
Appendix
Index
About the Author
Alan Schwartz, Ph.D. is an assistant professor of clinical decision
making in the Departments of Medical Education and Pediatrics at the University
of Illinois at Chicago. He is also the author of Managing Mailing Lists and
the coauthor of Stopping Spam (both from O'Reilly). He serves as a consultant
on Unix system administration for several ISPs. In his spare time, he develops
and maintains the PennMUSH MUD server and brews beer and mead with his wife,
with whom he also develops and maintains their son. Turn-ons for Alan include
sailing, programming in Perl, playing duplicate bridge, and drinking Anchor
Porter. Turn-offs include spam and watery American lagers.
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