So I have to two domains... separate Forest. we recently connected them as Trusted Domains. The Trust relationship seems to be working fine.
Now I need to add a User from Domain A and give them full access permission to a users mailbox in Domain B.
when I am in Domain B in in EMC I click on "Manage Full Access Permission..." click the add button I get add users or group.. but I cannot see any users from Domain A. therefor I cannot add them.
I've tried using FIM and syncing Global Address books.. but that only syncs contacts and still doesn't allow me to see users in Domain A from Domain B using EMC