Additional Resources - Red Hat LINUX 7.2 Reference Manual

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changing to the /usr/share/ssl/certs directory and running the make imapd.pem com-
mand. Then, set the imaps service to start at the proper runlevels and restart xinetd to enable the
service.
You can also use the ipop3 package bundled with Red Hat Linux to provide SSL encryption on its
own without stunnel.

16.7 Additional Resources

Many users initially find email programs difficult to configure, primarily due to the large number of
options available. Access to additional documentation can be very helpful, especially when setting
sensitive configuration options.
16.7.1 Installed Documentation
• Information about how to configure Sendmail is included with the sendmail and send-
mail-cf packages.
– /usr/share/doc/sendmail/README.cf — Contains information on m4, file loca-
tions for Sendmail, supported mailers, how to access enhanced features, and much more.
– /usr/share/doc/sendmail/README — Contains information on the Sendmail direc-
tory structure, IDENT protocol support, details on directory permissions, and the common
problems these permissions can cause if misconfigured.
In addition, the sendmail and aliases man pages contain helpful information covering vari-
ous Sendmail options and the proper configuration of the Sendmail /etc/mail/aliases file,
respectively.
• /usr/share/doc/fetchmail- <version-number> — Contains a full list of Fetchmail
features in the FEATURES file and an introductory FAQ document.
• /usr/share/doc/procmail- <version-number> — Contains a README file that pro-
vides an overview of Procmail, a FEATURES file that explores every program feature, and an FAQ
file with answers to many common configuration questions.
When learning how Procmail works and creating new recipes, these Procmail man pages are in-
valuable:
– 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.
Chapter 16:Email