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 is mail.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

Whether it is an A or CNAME record, the name being used must match a name in a certificate.  Use of a CNAME does not obviate the requirement to use a UCC or wildcard certificate.

An SRV record might work for that, however, so you might want to read up on the use of SRV records for Autodiscover in Exc

Ed,

Once again thanks for helping out with the tough questions. That makes sense, I wish I hadn't thought using a CNAME record would bypass the need for the name being in the certificate. for some weird reason I thought it would.

Robert