Every day at approximately 9:00am and 9:00pm OMA and OWA (Exchange 2003 SP1) would stop working. After restart of Exchange server (Server 2003 SP2 32bit), they were working again until that time. After uninstall of SEP antivirus, issue went away for at least 2 weeks.
The issue has returned today at 12:09pm, however SEP is still not currently installed. Browsing to http://servername/oma
and /owa returns "Internet Explorer cannot display the web page". I have recreated the virtual directories per other posts and have verified ASP.net configured to 1.1.
No changes made by myself before it went down accept configuring MozPro backup, which did not seem to be related to the issue previously.
Can someone help me identify the cause and resolve the issue?