This was working but after some problems with third party pop3 its been broken. Grrrrrrr
OWA internally works fine for my 2013 test mailboxes. It doesn't work externally yet because I have yet to cutover to co-existence. (Still pointing to the 07 CAS externally)
Internally Outlook 2010 is working for 2007 users. But for my three test 2013 mailboxes it is not. Outlook 2010 is patched to the correct level (even tried sp2)
It finds the user name - finds the server but refuses to authenticate. I have checked the outlook anywhere url on the 2013 server and I get the correct urls- internal and external set the same. I have set the service control point for autodiscover on 2013.
Now I haven't yet cut over externally to 2013 - and my internal urls for OWA are still set to webmail. But the legacy name exists and is set internally for all others. Authentication? basic externally NTLM internally
Where do I start looking. .