Hello,
I added Exchange 2013 to the existing Exchange 2010 Environment. Users that were moved to 2013 have to enter their user name and password every time they open Outlook. It happens inside and outside of the firewall.
I think it is related to the certificate, but I am not sure how to deal with this since I cannot use internal names on the public certificate anymore. Their Exchange 2010 server has public certificate with External and Internal SAN and all URLs (internal and external) have public name mail.domain.com.
The server name is ex2013.domain.local. I configured all URLs (internal and external) to have public name mail.domain.com. I think that this creates this problem, but not sure.
They use IIS Reverse Proxy and all Exchange traffic is forwarded to the new Exchange 2013 server.
How do I deal with this issue? Anyone can help?
Thank you. Eric.