We have 2 domains London and Dublin with a trust between them, only the london domain is running exchange. In Exchange 2003 I was able to create a mailbox and select an account from the dublin domain and make it the external associated account for that mailbox, the dublin user was then able to connect to the mailbox and send \ receive email OK. How can I achieve this in Exchange 2010 as when I select manage send as permissions I can see no way of selecting users from the dublin domain. For obvious reasons I don't want to give either everyone or authenticated users rights to do this though this will solve the problem.
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If it doesn't leak oil it must be empty!!
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If it doesn't leak oil it must be empty!!