Outlook Cert error Exchnage 2013 outlook 2013

I Have Installed the cert for webmail.domain.net.

The FQDN is exchnage2013.domain.net

I have a dns record for webmail.domain.net pointing to that IP.

I have changed the internal and external URI/L autodiscovers and the reset to webmail.domain.net/xxxxx

THis works great for outlook 2010 but on 2013 its still giving then domain doesn't match the cert error