I am using SBS Essentials 2012R2 with an on premise Exchange 2013 server.
Outbound and in bound mail work fine. I using remote.domain.com internally and externally to get to email.
My problem is that autodiscover does not work externally.
I get the following error whole testing
"Validating the certificate name, Certificate name mismatch".
can anybody tel what I am doing wrong.