You need to use the FIM 2010 R2 (only support Exchange 2013 and Windows 2012) for synchronizing accounts in t
Hi damadhatter,
Thank you for your question.
Is a transitive 1-way trust the best way to set this up? Once I setup the trust then can create a mailbox linked to the AD account in the domain blahblah.local at site B?
A: yes, we need to setup the trust on two site for link mailbox and FIM.
The synchronization service was included on Forefront Identity Manager(FIM), we could refer to the following link:
The more details could be referred by the following link:
https://technet.microsoft.com/en-us/library/jj134310(v=ws.10).aspx
If there are any questions regarding this issue, please be free to let me know.
Best Regard,
Jim
Pretty sure I found the answer to my question. Linked mailboxes, no need for FIM.
https://technet.microsoft.com/en-us/library/jj673532(v=exchg.150).aspx