First - Thank's to Klug!
Worse luck! The wiki-manual don't help. I know, how I can limit the rights of the DL to one Domain, but it's not universally valid - so for every domain it's unavoidable to set every rights and admin-views again. When using the DL of another domain, you see the accounts of the other domain and that's not what I'm looking for. Agreed?
I like a easy way (1 or 2 clicks) to activate domain admin ;-) Maybe it's this bug:
Bug 41837 – simplify domain admin creation (but for me, whitout the zimlets ...)