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Linux: Creating sendmail.cf using m4

After modifying the sendmail.mc on a Linux mail server your need to recreate the sendmail.cf file.
m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf


Provided that /etc/mail/sendmail.mc has the following lines at the top:

dnl ### Include default Sendmail cf file
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl


Other wise you need to include it on the command line:

m4 /usr/share/sendmail-cf/m4/cf.m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf


Now if you don’t get any errors from the previous command issue the following to restart sendmail:

/etc/init.d/sendmail restart

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Categories: Linux, Sendmail Tags: , , ,