Add 2 different AD enveriments to one Exchange server

Hello


Can anyone direct me to where I can find information on how to host 2 AD site on exchange 2010?

we have 2 companys that need to be completely sperated from one another in exchange so they will need there own GALS and OAB's. As well they will need there own doamin to allow them to log in to OWA.

Hope that i enough informaiton
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SEHCAsked:
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Adam BrownConnect With a Mentor Sr Solutions ArchitectCommented:
The way you want to do it is troublesome at best, but is technically possible. It would, however, require you to develop a third AD environment to host Exchange on. You could do this with Linked Mailboxes and Forest trusts. Basically, you would configure each client network to have a forest level trust with the third network (but not each other) and create linked mailboxes for each environment. The management of the environment would be tricky, because you would have to create a separate GAL and OAB for each, but Exchange 2010 does support that. You'd also have to make sure you are creating users for the correct domains and whatnot when you build new users. You could potentially do this with one of the existing domains hosting exchange and a trust with the other environment, but doing so would require a significantly greater level of configuration and security partitioning. With a third environment hosting exchange, you could limit access to the domain to a single OU for each client and also limit the GAL and OAB to only include mailboxes in the appropriate company's OU.
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Neil RussellTechnical Development LeadCommented:
Exchange can ONLY exist in a single Active Directory so if by DOMAINS, you truly mean different AD Domains in different forests, you cant.

You can have exchange handle multiple accepted email domains though.

Please consider and explain further if that makes no sense.
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James HodgeManaging DirectorCommented:
Hello,

Unfortunately, this is not technically possible.

Exchange can only server one Active Directory envirnoment.

James
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SEHCAuthor Commented:
Hi


How do I create a separate GAL and OAB for different OUs? can that be done?
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