We are in the process of migrating all of our servers away from exchange 2010 and onto exchange 2013 with the long term view of migrating mailboxes to exchange online in a hybrid environment. I began by introducing the Exchange 2013 server with the CAS and Mailbox role. We use round robin DNS for our CAS with the internal URL matching the external webmail address so I ran the set-clientaccessserver -identity -servername - autodiscoverserviceinternalUri https://domain.org/autodiscover/autodiscover.xml and then began migrating mailboxes across for testing.
All email come through and send ok however I receive certificate errors stating that the server name does not match the certificate. Can anyone help me?
I am not sure what the next step to take is.