Hello, my Problem is a bit strange... We have 2 Domains lets call them domain1 and domain2 ... we have linked Exchange mailboxes from users which are in domain2 to Mailboxes in domain1 The problem now is i cann not Add Domain Users from domain1 to the Public folders... we only see the Addressbook of Domain2.... i thought with PFDAVAdmin there could be a way to Export permissions then edit the .TXT file and reimport ... i thinke this worked ... but when i look in the Logfile it sais: Error: LookuoAccountName failed on: Domain1\USERNAME Permissions for this entity will not be applied. is there another way to get this Domain1 Users in the Permissions?! Other Tool maybe? or a other Way... Thanks!!