Kolab 3.2 is not accepting Mail

[Daniel Nordhoff-Vergien]

Hi,

I've installed kolab 3.2 on CentOs. Since setup-kolab failed setting a 
custom domain, I used the one suggest from hostname and afterwords 
changed the default domain. I've copied the ldap entries to a new tree 
and changed the searchbase and bind dn in the configfiles.

But I can't revive mail. It get rejected with:
.. said: 554 5.7.1
     <honk at vergien.net>: Relay access denied (in reply to RCPT TO command)

Sending mail works, also accessing the imap folders.

Where to search?

Regards

Daniel