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Our parent company has many individual companies under their umbrella. Each have their own IT teams, Exchange server, and domains all run independently of each other.

We now have a user that needs to add 2 different shared mailboxes, one from Company A and one from Company B. Is this possible to do? And if so, how?

I am asking as one IT Team said it isn't possible. However I thought it was. Thanks

Bob Allande
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    AFAIK it is possible, but you would need a user account in both domains. The user account should then be granted access to each of the shared mailboxes. – Drifter104 Sep 20 '17 at 16:32
  • Do you mean that they need access to a shared mailbox in each domain, which is a special type of mailbox specifically for shared use amongst multiple people or do you mean they need access to a mailbox in each domain. – joeqwerty Sep 20 '17 at 20:13
  • Yes, they need access to a shared mailbox in each domain, not a normal/regular mailbox – Bob Allande Sep 20 '17 at 20:45

1 Answers1

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Yes it is possible:

Option 1:

The user need two accounts (one which has a primary mailbox in the primary exchange environment. Then a 2nd account which has the needed rights on the shared mailbox).

Option 2:

If its a parent company you might wish to trust both active directory environments and then build something based on that construct.

BastianW
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