I have been having some serious issues with webmail and I can't seem to figure out what exactly is causing the problem. Basically, webmail stops responding, but if you give it enough time it seems to correct itself. The problem is intermittent and may not happen sometimes for days. The OWA box is on DMZ and is separate from the exchange server. I have opened all required ports to both the Exchange box and the DC. Here is the error from the event viewer which pops up at a rate of every minute:
Event ID 9175
The MAPI call 'OpenMsgStore' failed with the following error:
The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance.
The MAPI provider failed.
Microsoft Exchange Server Information Store
ID no: 8004011d-0526-00000000
There don't seeem to be any connectivity issues from the OWA box to either Exchange or the DC. Also, we currently use a Symantec Raptor firewall.
Any help would be greatly appreciated.
June 9, 2005 1:46 PM
June 10, 2005 7:24 AM