SpamAssassin
Alan Schwartz
- 出版商: O'Reilly
- 售價: $1,150
- 貴賓價: 9.5 折 $1,093
- 語言: 英文
- 頁數: 207
- 裝訂: Paperback
- ISBN: 0596007078
- ISBN-13: 9780596007072
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商品描述
Description:
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