Our webmail webpage has stopped working.
Users of Firefox receive "The connection was reset" error.
Users of IE receive "Internet Explorer cannot display the webpage" error.
Users trying to update their mailboxes on iPhone's "The connection to the server failed"
or when trying to add an exchange account to an iPhone, we see "Unable to verify account information."
I have reset IIS, I have reset the Exchange Information store (I have not restarted the server)
Port 443 is open.
In-fact when attempting to access the exchange server's web pages via it's local IP, name or FQDN I see errors in IE and Firefox.
The server is 2003 R2