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NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.

11.6. Additional Resources

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

11.6.1. Installed Documentation

  • Information on configuring Sendmail is included with the sendmail and sendmail-cf packages.

    • /usr/share/sendmail-cf/README.cf — Contains information on m4, 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 about ways 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.

11.6.2. Useful Websites

11.6.3. Related Books

  • 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.

  • Red Hat Enterprise Linux Security Guide; Red Hat, Inc. — The Server Security chapter explains ways to secure Sendmail and other services.

 
 
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