I have Exchange 2007 with a valid UCC SSL with a common name of webmail.mydomain.com and SANs for the internal.mydomain.com and NetBIOS name. I have set all the external and Internal URLs for the ClientAccessServer, WebServicesVirtualdirectory, OABVirtualDirectory and UMVirtualDirectoy via the Powershell. All Domain clients and Outlook 2007 services work fine. I now have to provide access for Outlook 2007 NON-domain clients. Its my understanding that Outlook 2007 is hardcoded to look for autodiscover.mydomain.com in order for OOF to work correctly.
My question is can I keep the common name of webmail.mydomain.com and just add a SAN for autodiscover.mydomain.com (add DNS entries and generate CSR obviously) or does the common name have to be autodiscover.mydomain.com for Outlook 2007 non-domain clients and OOF to work?