HP-UX Mailing Services Administrator's Guide

Configuring and Administering Sendmail
Configuring Sendmail
Chapter 2 41
Configuring Sendmail
Sendmail is packaged with the core HP-UX 11i v2 operating system.
When you install the operating system, Sendmail is automatically
installed on your system. The necessary files required for Sendmail
operation are created or modified on your system. The Sendmail
configuration file supplied with the operating system, sendmail.cf, will
work without modifications for most installations.
Therefore, you only need to perform a few tasks to configure Sendmail:
• Set up Sendmail servers to run with NFS.
• Configure and start Sendmail clients.
• Verify that Sendmail is running properly.
This section discusses the following topics:
• “Configuring Sendmail on a Standalone System” on page 41
• “Configuring Sendmail on a Mail Server” on page 43
• “Configuring Sendmail on a Mail Client” on page 43
• “Verifying your Sendmail Installation” on page 45
NOTE HP recommends that you use Sendmail with the BIND name server. The
BIND name server must have a mail exchanger (MX) record for every
host in every domain that it serves. For more information on how
Sendmail uses MX records, see “Mail Exchanger (MX) Records” on
page 31.
Configuring Sendmail on a Standalone System
When Sendmail is installed, it is automatically configured to send and
receive mail messages for users on the local system only. The standalone
system processes all outbound mail and establishes connections to the
message destination host or to the MX hosts. Because the Sendmail
daemon is invoked automatically when a system is rebooted, no system
files need to be modified.