Exchange Meeting requests being sent to uninvited people

User A will invite UserB and UserC to a meeting.  When the invite is sent, UserD (Ex Employee who was very nosy) gets invited also.  (Since UserD is no longer here, an undeliverable message comes back to UserA, which is very annoying.)  This happens for every invite sent by UserA and UserC - it never happens for UserB!

I am fairly certain this is something stored in the server somewhere, because since UserD has left, all of the workstations have been changed.  I want to stop this activity, but dont know where in exchange to look.
BanacekPresident / CEOAsked:
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Robert SchuttSoftware EngineerCommented:
If you're willing to install the Exchange SDK on your server you should be able to view Event sinks in the Exchange Explorer. I haven't used it myself but I suspect that's where you'll find the culprit.

You should also be able to do it with a script that's available at the bottom of this page: http://support.microsoft.com/kb/324021 

But you'll need to be careful a bit, spam and virus killers also use these I believe so you don't want to delete those.
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BanacekPresident / CEOAuthor Commented:
Thanks - sorry for being so late with the response.
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Windows Server 2003

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