14.6. Additional Resources

The following is a list of additional documentation about email applications.

14.6.1. Installed Documentation

  • Information on configuring Sendmail is included with the sendmail and sendmail-cf packages.
    • /usr/share/sendmail-cf/README — Contains information on the m4 macro processor, file locations for Sendmail, supported mailers, how to access enhanced features, and more.
    In addition, the sendmail and aliases man pages contain helpful information covering various Sendmail options and the proper configuration of the Sendmail /etc/mail/aliases file.
  • /usr/share/doc/postfix-version-number/ — Contains a large amount of information on how to configure Postfix. Replace version-number with the version number of Postfix.
  • /usr/share/doc/fetchmail-version-number/ — Contains a full list of Fetchmail features in the FEATURES file and an introductory FAQ document. Replace version-number with the version number of Fetchmail.
  • /usr/share/doc/procmail-version-number/ — Contains a README file that provides an overview of Procmail, a FEATURES file that explores every program feature, and an FAQ file with answers to many common configuration questions. Replace version-number with the version number of Procmail.
    When learning how Procmail works and creating new recipes, the following Procmail man pages are invaluable:
    • procmail — Provides an overview of how Procmail works and the steps involved with filtering email.
    • procmailrc — Explains the rc file format used to construct recipes.
    • procmailex — Gives a number of useful, real-world examples of Procmail recipes.
    • procmailsc — Explains the weighted scoring technique used by Procmail to match a particular recipe to a message.
    • /usr/share/doc/spamassassin-version-number/ — Contains a large amount of information pertaining to SpamAssassin. Replace version-number with the version number of the spamassassin package.

14.6.2. Online Documentation

14.6.3. Related Books

  • Sendmail Milters: A Guide for Fighting Spam by Bryan Costales and Marcia Flynt; Addison-Wesley — A good Sendmail guide that can help you customize your mail filters.
  • Sendmail by Bryan Costales with Eric Allman et al.; O'Reilly & Associates — A good Sendmail reference written with the assistance of the original creator of Delivermail and Sendmail.
  • Removing the Spam: Email Processing and Filtering by Geoff Mulligan; Addison-Wesley Publishing Company — A volume that looks at various methods used by email administrators using established tools, such as Sendmail and Procmail, to manage spam problems.
  • Internet Email Protocols: A Developer's Guide by Kevin Johnson; Addison-Wesley Publishing Company — Provides a very thorough review of major email protocols and the security they provide.
  • Managing IMAP by Dianna Mullet and Kevin Mullet; O'Reilly & Associates — Details the steps required to configure an IMAP server.