Wallace not intercepting resource invitations

[Cornelius Hald]

Hi,

for some reason wallace does not handle resource invitations on my Kolab
3.3 (CentOS 7) install. Instead I get a delivery report that states,
that the user "resource-car-porsche at kodira.de" is unknown.

>From my understanding the message should have been intercepted before
that by wallace. Setting the loglevel to 'debug' did not reveal anything
interesting.

Any idea where to look next?

BTW, this is a multi-domain setup.

Thanks!
Conny