Spamassassin

Spamassassin

3.0 1
by Alistair Mcdonald
     
 
In depth guide to implementing antispam solutions using SpamAssassin
.Implement the right antispam solution for your network and your business requirements
.Learn how to detect and prevent spam
.Optimize SpamAssassin for all major mail servers and clients
.Discover how to use SpamAssassin as a service

Free to use, flexible, and effective, SpamAssassin

Overview

In depth guide to implementing antispam solutions using SpamAssassin
.Implement the right antispam solution for your network and your business requirements
.Learn how to detect and prevent spam
.Optimize SpamAssassin for all major mail servers and clients
.Discover how to use SpamAssassin as a service

Free to use, flexible, and effective, SpamAssassin has become the most popular Open Source antispam application. Its unique combination of power and flexibility make it the right choice. This book will now help you set up and optimize SpamAssassin for your network. As a system administrator, it's down to you to implement, configure and adapt SpamAssassin to fight the Spam War. Fortunately, in SpamAssassin you chose well. Its power and flexibility make it a potent tool. However you also know that any flexible application is only as good as how it's set up and configured. This book is a comprehensive guide to the features, options and implementation strategies you need to get the most of out SpamAssassin.

This comprehensive and detailed guide answers all your SpamAssassin questions. You will learn about:

.Spam detection and prevention
.Installing and running SpamAssassin
.Using Bayesian Filtering
.Configuring mail clients
.Rewriting spam messages
.Integrating SpamAssassin with external services
.Blacklisting and whitelisting
.Increasing Performance
.Using SpamAssassin as a service
.Using SpamAssassin with Fetchmail, postfix, sendmail, Exim, Qmail, procmail
.SpamAssassin rules

Product Details

ISBN-13:
9781904811121
Publisher:
Packt Publishing
Publication date:
09/23/2004
Pages:
240
Product dimensions:
7.50(w) x 9.25(h) x 0.51(d)

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3 out of 5 based on 0 ratings. 1 reviews.
Guest More than 1 year ago
SpamAssassin is a common and free antispam method that is comprehensively described by this book. McDonald is writing for a sysadmin who wants an effective method to halt spam. To be sure, he cautions that SA is not 100% effective. He gives concise explanations of how to install and run it. The most recent version surveyed here is 3.0. And there is one key innovation in it, and also in the earlier 2.63 version. Namely what it calls SURBL = Spam URI Real time Blacklist. A powerful idea. You block a message as spam, if its body has URIs in an SURBL. It should be said that it took the SA coders a long time to recognise and implement this idea. Another issue is how to generate an SURBL. Here, the author just says that you can get these from external sources, like Spamhaus, just like you would for an RBL. More discussion here might have been helpful. There is little recognition in the book that the SURBL method has significant advantages over a Bayesian, the latter of which gets extensive coverage. The SUBRL method is faster in extracting URIs from a message body and then comparing against the SURBL, than in comparing the message's words to the corpus of the Bayesian. All the more so if the latter word comparision is restricted to words that are not in HTML tags and are visible to the reader. Also, if the SUBRL has domains that are definitely considered to be spammer domains, then using it is deterministic. Unlike the stochastic general nature of SA's approach, which totes up a spam likelihood score. The deterministic aspect is far stronger. Plus, there is no need for regular manual training, as with the Bayesian - either at the user or sysadmin level. But a casual reader will miss all this. The SURBL is given minimal description.