I've just installed Windows Server 2012 and Exchange 2013. I previously was using Windows SBS 2008 with Exchange 2007 and I was able to connect to the server via VPN and create an Outlook account and connect to the Exchange server no problems.
Now with the WS2012 and Exchange 2013 everything is working fine but when I connect to the VPN from outside the network and try to create a new Exchange account in Outlook, I get the error "The name cannot be resolved. The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action."
When I'm on the VPN I can ping both server name and IP address no problems so that isn't the issue. I've searched the net and tried multiple things including turning off firewall on both sides.
To clarify my setup I have two WS2012 servers. One is DC and VPN server, other is Exchange 2013 server which has both CAS and Mailbox roles.
I have a suspicion that the issue is to do with certificates. I don't have a valid bought SSL certificate, I am just using self-signed certificate. Can anyone verify that this is the issue or could it be something else?
Thanks.