Kolab 3.2 is not accepting Mail

[Henning]

Hi,

You should dig why your smtp-server contacts your relay server while 
receiving a mail. Normally it shouldn't, but deliver the mail locally 
without relay. This is probably what it does.

Henning

Am 30.06.2014 14:22, schrieb Daniel Nordhoff-Vergien:
> Yes I'm using an "external" smtp server to send the mail and this is the
> answer mail I get:
>
> This is the mail system at host vm-mailgate1.uni-greifswald.de.
>
> 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
>
> <honk at vergien.net>: host echo580.server4you.de[85.25.139.16] said: 554
> 5.7.1
> <honk at vergien.net>: Relay access denied (in reply to RCPT TO command)
>
> Reporting-MTA: dns; vm-mailgate1.uni-greifswald.de
> X-Postfix-Queue-ID: A0333183194D
> X-Postfix-Sender: rfc822; daniel.nordhoff-vergien at uni-greifswald.de
> Arrival-Date: Mon, 30 Jun 2014 13:35:47 +0200 (CEST)
>
> Final-Recipient: rfc822; honk at vergien.net
> Original-Recipient: rfc822;honk at vergien.net
> Action: failed
> Status: 5.7.1
> Remote-MTA: dns; echo580.server4you.de
> Diagnostic-Code: smtp; 554 5.7.1 <honk at vergien.net>: Relay access denied
>
>
> Regards
>
> Daniel