I am running Exchange 2013 on Windows Server 2012 R2.
When I add my exchange account to Outlook, it seems to work perfectly (sending/receiving email, syncing everything), but when I open the account settings it has the following set as the Server:
ffff9c55-a9e0-47e9-8779-dbf73af18dd7@domain.com
I would have expects this to be: mail.domain.com since this is the DNS A record pointing to the IP of my server. Where is it getting this server name?