Autodiscover getting Server Name

Hi!

When we are configuring Outlook with Exchange 2013 through autodiscover, it is getting Exchange Server name like (ex1.domain.com) in the Proxy Settings instead of (mail.domain.com) and then showing certificate error.

We have two Exchange 2013 configured with DAG and DNS Round Robin.

Secondly, while generating CSR for Exchange we are getting mail.domain.net. (a dot at the end after net) then we have to click on the pen icon and remove the dot.

Any Suggestions?

Thanks.