Alias forward

[ErrorProne]

I've a problem which seems a little bit weird to me.

We have a domain with one alias which forwards to to original domain.
So the entry for the alias domain2.tld forwards to [http://] domain1.tld
This works fine until I enter something like http://domain2.tld/demo which comes out as http://domain1.tlddemo.
Adding a trailing slash to the alias-forward-entry is, for some reason, refused by ispcp with "Wrong domain part in forward URL!".

Any ideas?

Cheers

PS: We've the latest 1.0.5 ispcp on a brand new debian.