best options for a *WORKING* MTA
myawaddy at 163.com
Tue Jun 2 01:20:56 UTC 2015
On Mon, 01 Jun 2015 12:48:46 -0400, Aryeh Friedman wrote:
> I have tried every which way I can find in the handbook and/or on the
> net to get a working mail server and the best I can do get the default
> sendmail to answer on localhost only (postfix seems to be completely
It's not simple. I've always found online blogger's tutorials to be a
waste of my time. You should be reading only the documentation provided
by Postfix.org itself and also your distribution's Postfix specific
documentation; FreeBSD, Debian etc. Read both, and make sure you are
reading the documentation for the correct versions of both your distro
For me, there really were many hours of frustration caused by overlooking
the simple gotchas written in bold print in both Postfix's and my
distro's documentation. These are often missing from the blogger's
tutorials you will find by querying the search engines for "Postfix
Configuration How To."
Don't try to do it all at once with TLS/Cryus-sasl/Spamassasin/Dovecot on
your first attempt. I've always succeeded taking it one step at a time
and testing each config change with either telnet or "openssl s_client,"
before adding more changes. When testing I send test messages to
mailinator.com instead of a real email address to avoid being blacklisted
for sending too many test messages.
Make one configuration change, then test that it works, then back it up.
This way you can rollback to a working configuration if the next change
fails. Take baby steps; Is the port open? Is it firewalled? Is anybody
listening on that port? Is Postfix even running?
I've found the simplest way by far to set up a working mailserver is to
read the fine manual [RTFM]. Postfix's documentation is excellent.
I could kick myself in the head for each time I've goggled for a quick
and easy "how to" tutorial instead of reading the manuals.
The tutorials never tell you to trun off your partially tested mailserver
when you are not actually testing it. Spammers found one of my partially
configured Postfix mailservers that I left running overnight on a VPS and
sent out 40k plus messages before my VPS was banned/closed and my IP was
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