We are running Exchange 5.5, and we are not able to connect. Most PC's are
running Outlook 2000 and connection was fine until one day ago. Now, whenever
we try opening Outlook it says "Unable to open default folders. Microsoft
Exchange Server computer is unavailable..." I have tried restarting the
server. Right when the server comes back, I can connect using Outlook
(sluggishly). Then after a few minutes the connection fails. I can ping the
server, and I have tried altering DNS settings. The exchange services on the
server are also "started".
There are no application event log errors and the server is running at 100%, it seems.
Thank you very very much!