Outlook Meeting Request Shows Wrong Organizer

We have a user that tries to request meetings with Outlook 2010. When the
meeting request is sent to a users blackberry device it shows the organizer as
someone from outside the company, lets call that person "Mr. X". When I saw the
organizer come through as "Mr. X" instead of the original organizer I ran a
search on the users inbox and found that the user has conversations from a
couple months ago with "Mr. X". When the user makes a meeting request to any
other mail domain like "@gmail.com" or "@firstcoast.com" it shows the correct
meeting organizer, it is only when the meeting request is sent to a blackberry
account that it shows the organizer as "Mr. X".

We are running exchange
2010 and I have gone through the settings on the server and the users outlook
multiple times and cant seem to find any misconfigurations. I have also gone
through and deleted any recurring meetings that the user had with "Mr. X" in the
past.

I have seemed to stump google with this problem, and I am not sure
what to try next. If anyone has seen this before or has any ideas I would be
grateful and willing to try them. Thank you all for your time.