I have two domains: Domain A and Domain B. Domain A has an Exchange Server. Using Cross-Forest setup, I should be able to enable users in both domains to access the FIM portal. If I want to give users in domain B a mailbox in the Exchange server (which is located in Domain A), do I need to create AD accounts for those users in Domain A as well? Will FIM require one-way trust between the domains, or two-way trust?
Thanks in advance!
John