smtp banner for postfix using virtual domains

[yahoo...@lazygranch.xyz]

Postix 2.11.6 on freebsd 10.1
Configuration is mostly from
http://blog.iandreev.com/?p=1604

I have set up postfix as indicated in the above link. Basically
everything works. Using one of the email server verification services,
it complained about the smtp_banner not being used. I have two (at the
moment) FQDN using one virtual personal server.

My question is simple, though I can't find an answer from an internet
search. How do I get postfix to use the proper domain name for each
virtual domain in the smtp banner?

[Viktor Dukhovni]

On Fri, Oct 30, 2015 at 05:40:12PM -0700, yahoo...@lazygranch.xyz wrote:

> My question is simple, though I can't find an answer from an internet
> search. How do I get postfix to use the proper domain name for each
> virtual domain in the smtp banner?

The answer is simply don't. This is unnecessary and impossible
without dedicating a separate IP address to each domain.

Anything that warns you about the banner not matching the destination
domain is misguided.

--
Viktor.

[yahoo...@lazygranch.xyz]

Well that takes care of that. BTW here is the error message:
IMAP Banner Reverse DNS Check:Failed - IMAP Banner/Greeting Does not
contain your hostname

The email checker service is
https://www.unlocktheinbox.com/
in the event the topic crops up again.

I hadn't noticed it was an imap issue, so mkaybe this should have
been a dovecot question. But in any event, if the banner isn't really
required, the question is answered.

I will admit the "unlocktheinbox" service is very complete, though
prone to false postives unless you read the report carefully. (Hint:
look for the word obsolete.)

In my internet search, I ran into one document that suggested not to
use the smtp banner since it gives a clue (albeit minor in my opinion)
about the email server. You could probably learn more from a bounced
email.