Am 2019-09-20 12:06, schrieb Randal, Phil:
When I migrated our mx boxes from CentOS 5 to 7 I made the leap to
postfix.
I built a test server with postfix etc on it and threw everything I
could think of at it before going live.
The key is, like in learning a new language, to start thinking in
postfix terms instead of thinking in sendmail terms.
Exactly, I was about to answer the same.
Postfix has a lot of features build-in Sendmail hasn't. It is feature
rich and actively developed. Many things you would need a milter or
complex cf style coding for with Sendmail you can configure in Postfix
in a simple way.
It takes a while to 'get it' but I'm glad we made the link.
We search, read as many people's howtos as you can (caveat - they are
rarely 100% accurate), and test, test, test before going into
production.
Please, forget about so call howtos or tutorials on the net. They are
either dated, giving wrong ideas (no, you don't need a MySQL server to
run Postfix), failing to explain why the author has done things the way
he writes them up, or they are simply wrong / violating best practice.
Postfix has a very good documentation (compared to the one shipping with
Sendmail).
http://www.postfix.org/documentation.html
http://www.postfix.org/postconf.5.html
Cheers,
Phil
Alexander
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