Exchange 2007 OutofOffice not working anymore

Hi Experts,

can you help me to test my OoO function in exch2007 ?
Since some days it is not working anymore.
OWA works.
Autodiscover tests are successful.
OoO over OWA also works.

But OoO from the outlook gui not working.
Eprs_AdminSystem ArchitectAsked:
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AmitIT ArchitectCommented:
Disable cache mode and check again.

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systechadminConsultantCommented:
Did you properly configured  Exchange Web services?
Eprs_AdminSystem ArchitectAuthor Commented:
problem solved with flushdns on the client side.
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