When you have completed editing your m4 configuration file, you must process it
to produce the /etc/mail/sendmail.cf file read by
sendmail. This is straightforward, as illustrated by the
following example:
# cd /etc/mail
# m4 /usr/share/sendmail.cf/m4/cf.m4 vstout.uucpsmtp.mc >sendmail.cf |
This command invokes the m4 macro processor,
supplying it the name of two macro definition files to
process. m4 processes the files in the order
given. The first file is a standard sendmail macro
template supplied with the sendmail source package,
the second, of course, is the file containing our own macro
definitions. The output of the command is directed to the
/etc/mail/sendmail.cf file, which is our target
file.
You may now start sendmail with the new configuration.