We currently are running an Exchange 2003 cluster, clients are running Office 2003 in cached exchange mode.
We have been experiencing an issue where some client's Outlook will go to the Offline state, thus no longer sending or receiving email until they uncheck the Work Offline in the lower right hand corner.
Some are users at remote sites, some are local to the server. Does not seem to depend on the setup type(upgrade or clean install), OS(XP or 2000). For instance, it happened to a brand new PC setup the day after it was installed.
The Exchange server is up the entire time and there are no issues with that as far as I can tell. The Outlook client is open when this happens, may happen in the middle of the day or overnight.
Any ideas will be appreciated.