I have a server running Windows 2003 and Exchange 2003. One day, OWA stopped working. While troubleshooting, I noticed that none of the websites are accessible, including the Symantec Mail Security page. I've looked at all the services - it looks like everything is started. I've restarted IIS a couple times during my troubleshooting process. So, there isn't a single website that is viewable. We also have a valid Thawte cert on the default web site. Any thoughts here? This is a production server so rebooting several times isn't feasible(but if we have to, it will be scheduled). Opinions?
This occurs both internally and externally - all web sites.