elstar.com.au

When you open Outlook 2007 connecting to an Exchange Server 2007 server you receive a security alert.
for sites.my-domain.com.au
The name on the security certificate is invalid or does not match the name on the site.

The security certificate name is sites.my-domain.com.au
but the certificate is issued to remote.my-domain.com.au

If you click Yes to continue another security Alert appears
for sites
The security certificate name is sites
but the certificate is issued to remote.my-domain.com.au

Clicking Yes to proceed after this warning you get to the Outlook program.