HP-UX Mailing Services Administrator's Guide

Configuring and Administering Sendmail
Modifying the Default Sendmail Configuration File
Chapter 248
Modifying the Default Sendmail
Configuration File
The Sendmail configuration file that is supplied with HP-UX works
correctly for most Sendmail configurations, so you probably do not need
to modify the configuration file. However, certain modifications to the file
are supported. This section describes examples of modifications that you
may want to make. The configuration file also contains instructions for
making the supported modifications.
This section discusses the following topics:
• “The Sendmail Configuration File” on page 48
• “Restarting Sendmail” on page 50
• “Sendmail Configuration Options” on page 50
CAUTION HP supports the default configuration file and all the modifications
described in it. If you make any changes other than the ones described in
the default configuration file, HP cannot support your configuration.
The Sendmail Configuration File
The Sendmail configuration file, /etc/mail/sendmail.cf, performs the
following functions:
• Defines certain names and formats, such as the name of the sender
for error messages (MAILER-DAEMON), the banner displayed by the
SMTP server on startup, and the default header field formats.
• Sets values of operational parameters, such as timeout values and
logging level.
• Specifies how mail will be routed. In other words, it specifies how
recipient addresses are to be interpreted.
• Defines the delivery agents (mailers) to be used for delivering the
mail.