I recently purchased WSS 3.0 hosting from a local provider who set my environment up as www.mydomain.com. For a couple weeks, any requests for the URL mydomain.com would resolve correctly and show the same site as www.mydomain.com. A few days ago, however, I started getting prompted to enter a UID and PWD via Basic Auth for requests to mydomain.com. If I enter a valid UID and PWD, I am taken to a "Not Authorized" error page from SharePoint (not the default one from IIS). If I enter www.mydomain.com into the browser, all works as expected.
I reported this to my host, but they're telling me "we set it up for www, so that's the only URL that will work".
Anyone know how I can fix this issue?