That would probably be an Active Directory/Exchange Server System Manager
issue; you might try posting this in one of the Exchange Server forums.

Hal
--
Hal Hostetler, CPBE --
Senior Engineer/MIS -- MS MVP-Print/Imaging -- WA7BGX
http://www.kvoa.com -- "When News breaks, we fix it!"
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"TylerT" wrote in message
...
We recently switched to Outlook 2007, and when connecting to our Exchange
server when a user enters their info i.e. server: mail.somedomain.com and
user: "UserName" and hits "Check Name" the server then resloves to the
"somdomain.com.local". The problem being is now we get a certificate error
because the certificate is for mail.somedomain.com. There there any way to
fix this?