Book Image

SpamAssassin: A practical guide to integration and configuration

Book Image

SpamAssassin: A practical guide to integration and configuration

Overview of this book

As a busy administrator, you know Spam is a major distraction in todays network. The effects range from inappropriate content arriving in the mailboxes up to contact email addresses placed on a website being deluged with unsolicited mail, causing valid enquiries and sales leads to be lost and wasting employee time. The perception of the problem of spam is as big as the reality. In response to the growing problem of spam, a number of free and commercial applications and services have been developed to help network administrators and email users combat spam. Its up to you to choose and then get the most out of an antispam solution. 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.
Table of Contents (24 chapters)
SpamAssassin
Credits
About the Author
About the Reviewers
Introduction
Glossary

URL Recognition


A Uniform Resource Locator (URL), more correctly called a Uniform Resource Identifier (URI), is typically a web link in a spam email. A Spam URI Real-time Block List (SURBL) is a database of URIs that have appeared in spam emails.

SpamAssassin version 2.63 supports SURBLs via a plug-in, and from version 3.0 onwards, SpamAssassin supports SURBLs without the need for a plug-in.

These tests use a small amount of network I/O while querying the database. They are suited to parallel processing.