Am 24.02.2020 um 00:37 schrieb Gregory P. Ennis:
Everyone,

I have had two e-mail servers running, one with Centos 6 and the other with 
Centos 7 using
sendmail, dovecot, spamassassin, clamd, and cclamav-milter without hardly any 
problems
after the initial setup.  My expertise should be considered not much more than 
beginner or
early intermediate.

I would like to create a hypervisor with Centos 8 and run a guest Centos 8 with 
postfix and
cyrus. I already have a guest Centos 8 on a Centos 7 hypervisor, and have had 
difficulty
getting cyrus to work.

Can anyone refer me to a tutorial on how to get postfix and cyrus to work on 
centos 8.
Everyone seems to imply that postfix is much easier to use, but so far I have 
not been able
to pass the low end of the learning curve.  Best recommendations for a tutorial 
is what I
would like to have.

Thanks much!!!!

Greg Ennis

Attention Greg, so-called tutorials do not tell you what you need to know about Postfix. Consult the original Postfix documentation.

Configure Postfix to us relay_transport for the hosted mail domains feeding Cyrus-IMAPd on LMTP. And make sure you define proper relay_recipient_maps (or virtual_alias_maps).

relay_domains = example.org
relay_transport = lmtp:inet:[1.2.3.4]:24

http://www.postfix.org/postconf.5.html

Alexander
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