I've mostly completed a successful coexistence/migration from EX2010 to EX2013 for a small test-environment.
One of the issues that I'm quite puzzled with is when configuring an Outlook client using AutoDiscover. Instead of the expected local FQDN of the CAS, the 'Server-name' gets populated with what looks like a GUID(f8a4ed0f-24c1-487f-7709-1031ed808516@[mail.EXT-FQDN.com]) and the proxy-addresses get populated with *internal* DNS-names([svr-FQDN.local]/msstd:[svr-FQDN.local]).
I have to manually change the proxy addresses, and then the Outlook client works just fine...even with the existing strange GUID-looking server-name in place.
I've verified that the OutlookAnywhere settings in ECP contain the correct FQDN's for both external & internal host-names...I even changed them both to be external FQDN's since I have split-brain DNS in-place thinking that might help the cause.
thanks in advance for any/all insight to this odd little problem,
~~Rob
thx, ~~Robb