One of my users gets the same invite to attend a meeting hundreds of times a day. The invite was originally sent from an external contact (outside our Exchange 2013 / AD setup) and I can see that this external contact sent the request only once. The repetition is happening within our system, and the invite generated each time is identical to the last.
Somewhere within Exchange something is not right. This replication happens regardless of whether Outlook is open, and whether there are iOS devices turned on and syncing or not.
I've some vague high concept ideas what might be happening, but if anyone could give me technical specifics to carry out in PowerShell or the EAC to try and fix this, I'd be most appreciative!
Many thanks :-)