A few years ago we changed our name from ABC.com to 123.com (just as an example.) So in our Exchange server we have both email addresses tied to user mailboxes (email@example.com and firstname.lastname@example.org..)
We are getting to the point where we would like to shut of the old 123.com email addresses but some of our users do not have a real sense if their old address is being used much or not at all anymore.
In Outlook, they receive the mail in the John Doe inbox and cannot tell to what address each message was actually sent.
Is there a way to tell in Outlook 2010 if a user wanted to look at a message?