Setting up Lync 2010 with 2 domains

Posted on 2012-08-13
Last Modified: 2012-11-12
Here's my situation. I need to deploy Lync 2010 and before I do I need to clarify an issue I know I will encounter. Due to a recent acquisition, our internal AD domain is while our email is hosted Office 365 Exchange with as the email address.

At this time, due to a custom application heavily in use, I can't change our internal AD domain to and must remain as However, I need Lync to use the

Is there a way to login to Lync (internally - not hosted) using the while sitting on the network? I could create a domain internally just for the Lync server to match, but it would be best if we could somehow have single sign-in between Office 365 and the Lync server or between the AD and the Lync server.

Any help would be appreciated.
Question by:welsh4
    LVL 26

    Expert Comment

    by:Leon Fester
    Can be done, check this thread on the Office 365 forums:
    LVL 26

    Accepted Solution


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