When testing Enterprise Vault with Exchange 2010, it is often necessary to access multiple mailboxes from the same Outlook profile.  I do this quite often.

I learnt today that with Exchange 2010 there is a rather neat way of giving the full mailbox access that I need.

It's a little bit of Powershell:

Add-MailboxPermission "NameOfMailbox"  -user "NameOfUser" -AccessRights FullAccess

eg

Add-MailboxPermission "notenabled" -user "Adele.Reinhardt" -AccessRights FullAccess

The output that you will get is like this:

References:

http://technet.microsoft.com/en-us/library/aa996343.aspx