I have a remote user who using Mac OSX 10.11.6 and trying to add their Exchange 2010 account in the Internet Accounts. I want to use the attached image to do this because the most automated version adds the account but kicks back credential errors on my Exchange server and they must deal with password pop ups. So I am struggling to figure out my Internal URL and External URL. For external, would it simply be the address I use to access the browser webmail? For that I just stick https://webmail.xxxxxx.com/owa
in IE and login to get to mail. For internal, would it be the FQDN address that appears in the Server box in the attached image Outlook Settings? I keep getting rejected. I tried using just the username as well as well as domain\username. Can someone help with this issue? Thanks!