I am running Exchange on a Server 2003 platform. No fe/be config--just a simply install of Exchange 2003 on this machine. It seems for the last few days my users have been unable to access their email via web access. Using IE, you get a page not found error. I don't see any errors in the event log and everything seems to be running as it should. Any ideas what could be causing this. Email using the Outlook client on the users machines on siteis working normally.

Does owa work from your local net inside your firewall

It did not. I restarted the server and then it worked fine. All the services that were needed seemed to be working before I restarted it, but in any event, it seems to work now.