Our webmail recently stopped serving mail and now displays an HTML 500 error page, “The website is under maintenance.”. Our Exchange server is a stand alone server (not clustered or backend). I’ve tried applying the MS Help and Support “Troubleshooting Outlook Web Access from an IIS Perspective” without success. (http://support.microsoft.com/kb/301428/en-us) I had found a few application errors in my event log indicating an “application pool error” but we are not using Active Server pages. I found a related “Service Unavailable when browsing an IIS web page on a domain controller support document. (not sure why, but our Exchange is on a domain controller) This was found at http://support.microsoft.com/?=842493) This also did not correct our issue.
I am not sure where else to look for in-depth guidance.
Does anyone have any suggestions where to turn for additional knowledge on this matter?