Installing and Administering Internet Services

154 Chapter4

Installing and Administering sendmail

programs for delivery and further routing. sendmail allows you to send

mail to and receive mail from other hosts on a local area network or

through a gateway.

This chapter contains the following sections:

• “Deciding Whether to Install sendmail” on page 156

• “Installing sendmail” on page 157

• “Creating sendmail Aliases” on page 164

• “How sendmail Works” on page 171

• “Modifying the Default sendmail Conﬁguration File” on page 185

• “Migrating the sendmail Conﬁguration File” on page 188

• “Security” on page 190

• “Troubleshooting sendmail” on page 207

You cannot use SAM to install, conﬁgure, or enable sendmail.

For more detailed technical and conceptual information about sendmail,

we strongly recommend you see sendmail, 2nd edition, by Bryan Costales

with Eric Allman and Neil Richert, published by O’Reilly and Associates,

Inc. Note that the sendmail, 2nd edition book describes sendmail

version 8.8, and so some conﬁguration options it describes might not be

supported by the sendmail version included with HP-UX 11.0. For

information about using sendmail with BIND, we strongly recommend

you see DNS and BIND, by Paul Albitz and Cricket Liu, also published

by O’Reilly and Associates, Inc.

Note that you can get information about the above books (including

retail outlets where you can buy them, as well as how to order them

directly from O’Reilly) by visiting the O’Reilly WWW site:

http://www.ora.com

Once you are at the O’Reilly site, look in the catalog, under the category

“System and Network Administration.” The above books are listed under

“Network Administration.”

You also can visit the WWW site for sendmail:

http://www.sendmail.org