Autodiscover CNAME Records

Hey Team,

I was hoping you could confirm something for me. when using autodiscover and cname records. Let me lay it out for you:

1. Certificate – Single Name – mail.testdomain.com
2. Autodiscover CNAME record = autodiscover.testdomain.com>>mail.testdomain.com
3. Traffic does hit the above site, but the certificate fails and AutoD does not work.

The above will not work because the name in the Certificate is what matters and because the URL you are actually connecting to ismail.testdomain.com.  I am pretty sure I am right and that AutoD does not redirect using CNAME records unless you use some method to actually redirect from one URL to Another.

Can anyone confirm?

Thanks,

Robert

Robert