Exchange 2010, user sends multiple internal OoO notifications..

Weird scenario here.. I have a user who was termed a few years back, then re-hired a year or so later.  I do not know for sure but I believe his original mailbox was disabled, possibly removed from Exch.  Then when he was re-hired a new mailbox  created.. in any event when he enables his OoO senders get the response he typed today plus another one from Feb 2010.. when he was first employed here.

Where can I look for a possible cause?  I know I could probably totally kill his mailbox and recreate it but obviously I want to forgo that if possible.
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Ben HartAsked:
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Simon Butler (Sembee)ConsultantCommented:
Sounds like a corrupt rule. OOTO messages are rules and if the rule was set with a legacy client then it can get stuck.

Flushing the rules out is the only option here:

outlook.exe /cleanrules


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Ben HartAuthor Commented:
Perfect as always Simon.
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