December 2002
Intermediate to advanced
1232 pages
56h 38m
English
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Name
$=m
Synopsis
When sendmail
first begins to run, it figures out what your DNS domain is and
assigns the result to the $m macro ($m). The sendmail program
then processes the configuration file. This gives you the opportunity
to redefine $m. After that,
sendmail assigns the final value in
$m to the class $=m.
Unfortunately, prior to V8.10 sendmail, the
class macro $=m was not used by
sendmail, nor by any of the configuration files
produced by the m4 technique. Beginning with
V8.10, $=m is used as part of screening to allow
relaying. Note that $=m should not be used to have
mail accepted as local under a variety of domains. Instead, use the
domaintable feature (FEATURE(domaintable)).
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.