Postfix Domain in BOTH mydestination and virtual_alias_domains

Submitted by Vince42 on Sat, 08/13/2016 - 18:37 Pro Licensee

Hi,

I have regular entries in /var/log/mail.log which reads postfix/trivial-rewrite[: warning: do not list domain domain.tld in BOTH mydestination and virtual_alias_domains.

The server is named server.domain.tld and I also (of course) do have the domain.tld as virtual host managed in Virtualmin. Removing $mydomain from the $mydestination line in /etc/postfix/main.cf results in mails not being delivered, as all the virutal user mails are internally forwarded to virtual.tld-user@domain.tld.

Is there any way to get this fixed without breaking the system's or Webmin's or Virtualmin's logic?

Status: 
Active

Comments

Submitted by andreychek on Sat, 08/13/2016 - 23:05

Howdy -- it shouldn't be a problem to have domain.tld added as a Virtual Server, and server.domain.tld in the mydestination line.

The only thing that might cause that notice, is if server.domain.tld is added as a Virtual Server. Do you know if that's the case?

However, are things working, in spite of that warning message?

Submitted by JamieCameron on Sat, 08/13/2016 - 23:09

Yeah, unless mail delivery is failing, I'd recommend ignoring that message.

Submitted by Vince42 on Sun, 08/14/2016 - 15:05 Pro Licensee

Everything works fine - I am just annoyed by superfluous log entries and think that there should / must be a "proper" way to handle this ... probably by removing domain.tld from the virtual hosts - but that is uncomfortable. Anyway, I have to accept that this is an unavoidable behaviour ... very sad.

Submitted by JamieCameron on Sun, 08/14/2016 - 19:45

This trigger for this is creating a Virtualmin domain which matches your system's hostname. Because we add all domains to virtual_alias_domains regardless, you can end up seeing this (quite harmless) warning.

Submitted by vstoykov on Sun, 03/19/2017 - 13:26

My hostname is server.example.com and I have virtual server server.example.com and I get this in my error log:

Mar 19 18:41:27 server postfix/trivial-rewrite[28256]: warning: do not list domain server.example.com in BOTH mydestination and virtual_alias_domains

I added a virtual server with the same FQDN in order to make a test page for server and make use of Webmin's automatic issuance of Let's Encrypt certificate, etc.

Is it safe to remove server.example.com from virtual_alias_domains?

Submitted by JamieCameron on Sun, 03/19/2017 - 15:45

You should remove it from mydestination instead.

Submitted by Vince42 on Mon, 03/20/2017 - 15:40 Pro Licensee

Everything that I have tried so far failed or had bad side effects - just to warn you. ;)

Submitted by JamieCameron on Mon, 03/20/2017 - 18:40

In that case, maybe just ignore this message?

Submitted by Vince42 on Tue, 03/21/2017 - 16:58 Pro Licensee

For the time being: yes.

But it is absolutely desirable to understand, why this happens and to find some solution to avoid the error messages. This also applies to some other issues that I have raised in the past. No administrator likes to read "meaningless" warnings in his log files - at least none administrator, I know. ;)

Submitted by JamieCameron on Tue, 03/21/2017 - 22:35

Agreed ... but I've yet to find a solution that doesn't have other side-effects.

Submitted by Vince42 on Fri, 03/24/2017 - 15:23 Pro Licensee

I quite imagine how difficult it is to change such a big configuration / administration system without breaking anything - I keep fingers crossed for all of us. :)