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Open additional Mailbox on different versions of Exchange 2003/2010

gregurl asked
Last Modified: 2012-05-11
I have a user on Exchange 2010 in my organization and a mailbox on Exchange 2003. Is it possible to have the Exchange 2010 users using Outlook add an additional mailbox hosted on Exchange 2003.

Also, can it work the reverse way a Exchange 2003 user add an additional mailbox on Exchange 2010?
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