I'm setting up a new domain with windows server 2012 R2 and exchange 2016. I've created a self-signed certificate with all my domain/sub-domain names on it and DNS records for the system name, autoconnect, and mail cname.
OWA works and using that I can send email to and from a gmail account and internally to two test users I created.
I'm trying to connect with outlook 2016 and receive the error "log onto exchange activesync mail server (EAS): Could not locate the specified server. Username and/or password are not valid. Please verify the information is correct."
I've verified the information and tried changing passwords. To be sure I entered the wrong password and received a different message altogether so I'm assuming this is not a username / password problem.
I used the Microsoft Remote Connectivity Analyzer website and it passes all of the tests except the outlook connectivity test which doesn't like my certificate, test attached.
Is this still a certificate issue? I've gone through a ton of articles online none of which have helped.