I have the following scenario:
A domain controller xyz.com that has a trust with other domains xpto.com, abc.com etc
The domain xyz.com acts as a resource forest for the other domains.
In my exchange server I want to allow the administrators of the other domains to create, edit and delete mailboxes for their users only in their respective email domains, as far as I have understood from reading the documentation on-line it is possible, but I can't seem to be able to make it work the way I want, created management scopes, role groups etc but my test user is still able to see mailboxes other than the ones that sould be allowed to see.
How can I create the permissions so that the xpto.com domain admin only seems his mailboxes and only is allowed to create new mailboxes for his users using his domain?