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Chapter 17; Email Clients

SpamAssassin does not remove spam email from the user's inbox; it only adds additional headers to tag email messages. Another part of the email delivery process performs the sorting. For sites that can use procmail, users or system administrators can filter spam into a folder automatically, as described in Chapter 8.

By moving spam to a different folder, we ensure that users do not view the spam unless they choose to. Their inbox is then free of spam, yet the spam can be browsed if desired. This is an important fallback in case legitimate email is incorrectly categorized as spam.

The email client that the user uses to view and create emails can often be used to filter spam. To do this, it has to be able to selectively move incoming messages to a separate folder depending on the data in particular email headers. Most popular email clients include this ability. This chapter will cover configuring email clients such as Microsoft Outlook, Microsoft Outlook Express, Mozilla Thunderbird, and Qualcomm Eudora to filter spam.

The email headers that SpamAssassin creates (by default) are:

    X-Spam-Flag:
    X-Spam-Checker-Version:
    X-Spam-Level:
    X-Spam-Status:

SpamAssassin can also alter the Subject: header, adding a tag at the beginning such as ***SPAM***. Adding and altering email headers is discussed in Chapter 10.

BOOK DETAILS   Paperback, 220 pages Released: Sept 2004 ISBN: 1904811124 Author: Alistair McDonald

TABLE OF CONTENTS

Intro
1. Introducing Spam
2. Spam and Anti-Spam Techniques
3. Open Relays
4. Protecting Email Addresses
5. Detecting Spam
6. Installing SpamAssassin
7. Configuration Files
8. Using SpamAssassin
9. Bayesian Filtering
10. Look and Feel
11. Network Tests
12. Rules
13. Improving Filtering
14. Performance
15. Housekeeping and Reporting
16. Building an Anti-Spam Gateway
17. Email Clients
18. Choosing other Spam Tools
Appendix A
Index
 

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