Issue Postfix/Dovecot/Plesk 12.5.30 user doesn't exist??

[UweP]

Hi.

I recently added a new eMail user, with an alias. But somehow the system doesnt recognize this user, even though I added the forward. It has no mailbox (i unchecked the box). Here the eMail I get:

This is the mail system at host baby.unityhub.eu.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<teamunity@unityhub.eu>: unknown user: "teamunity"



Reporting-MTA: dns; baby.unityhub.eu
X-Postfix-Queue-ID: 12542668082A
X-Postfix-Sender: rfc822; alphatrax@t-online.de
Arrival-Date: Fri, 12 Aug 2016 09:04:28 +0200 (CEST)

Final-Recipient: rfc822; teamunity@unityhub.eu
Original-Recipient: rfc822;TeamUnity@unityhub.eu
Action: failed
Status: 5.1.1
Diagnostic-Code: X-Postfix; unknown user: "teamunity"

Now after more investigation it turns out, that the whole domain doesnt forward eMail anymore. The mail services are set to on for the domain. I think this is a bug or something?

 

[UweP]

I did: /usr/local/psa/admin/sbin/mchk --with-spam still the problem persists. Also after doing plesk repair mail it didnt help.

 

[UweP]

can anyon e help me with this?

 

[Lloyd_mcse]

can anyon e help me with this?

Probably...with some more info
A couple of kb articles come up after searching "email forwarding does not work"...

Mail forwarding does not work: sendmail unsuccessfully finished with exitcode

or

Mail forwarding does not work on Postifx server

Maybe one of those will help
Kind regards

Lloyd