Question : The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action

My DC and exchange are running on separate machine. I setup OWA with SSL, and it's working from external network. I followed this tutorial http://www.petri.co.il/how-can-i-configure-rpc-over-https-on-exchange-2003-single-server-scenario.htm, install RPC server and configured it. But I am getting this error message at client "The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action"

I believe SSL should be an issue, otherwise OWA will not work. and since this tutorial it's for DC nd exchange on the same machine, i am wondering if I need to something else...

Answer : The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action

I got it work now after running the tool!