لطفا منتظر باشید ...
Chapter 12. sendmail
It's been said that you aren't a
real Unix system administrator until
you've edited a sendmail.cf
file. It's also been said that
you're crazy if you've attempted to
do so twice.
Fortunately, you no longer need to
directly edit the cryptic sendmail.cf file. The
new versions of sendmail provide a configuration utility that creates
the sendmail.cf file for you based on much
simpler macro files. You do not need to understand the complex syntax
of the sendmail.cf file. Instead, you use the
macro language to identify the features you wish to include in your
configuration and specify some of the parameters that determine how
that feature operates. A traditional Unix utility, called m4, then
takes your macro configuration data and mixes it with the data it
reads from template files containing the actual
sendmail.cf syntax to produce your
sendmail.cf file.
sendmail is an
incredibly powerful mail program that is difficult to master. Any
program whose definitive reference (sendmail, by
Bryan Costales with Eric Allman, published by
O'Reilly) is 1,200 pages long scares most people
off. And any program as complex as sendmail cannot be completely
covered in a single chapter. This chapter introduces sendmail and
describes how to install, configure, and test it, using a basic
configuration for the Virtual Brewery as an example. If the
information presented here helps make the task of configuring
sendmail less daunting for you, we hope you'll gain
the confidence to tackle more complex configurations on your own.
