I have an issue with a user exchange account, i will start from the beginning.
Request came to a junior engineer to attached 2 accounts to a managers outlook so that she review past emails. The engineer completed this by the following. File>AccountSettings>Change>more>Advanced>Mailbox.....
This worked as expected and the manager was able access all emails and folders. Once complete the accounts needed to be removed from the outlook. This is where is becomes Grey....
I assume at this point the mailbox did not disconnect correct and frustration came into play. I think the user account was Archived on the managers PC and as such ALL emails pre moday were removed from the exchange mailbox.
A remote engineer un aware of the above was pulled in to resolve the issue of missing emails. On accessing her local outlook (this is the end user not the snooping manager) the local archives were checked and and found not to be the location for a potentail "AutoArchive" blunder. All emails were found within her outlook deleted items (recover deleted items) and after a number of four letter words by the end user restored back to the inbox ( 20,000 later she is now again not happy her folder structure is gone).
We are internally hunting for pst archives etc but wanted to know of any other ideas we have not yet thought of internally (client does not have space to restore complete datastore).