Hi, I manage a small server running SBS 2008 with exchange 2007.
It has been running with out faults for months til one client connected opened outlook and was prompted for an exchange password. Now all of the clients are having the same issue.
In the lower left hand corner of the screen of outlook it says "exchange needs a password. Click here to type a password" Once clicked it instantly changes to "connected to exchange"
but it will only be a matter of minute to hours and it will prompt again.
I have update the server and rolled out rollup 10 for the exchange to SP1