I'm about to undergo a major migration from Exchange 2003 to 2010. Up until now, my organization has used the same URL (webmail.domain.com) for all of the Exchange services - OWA, RPC, ActiveSync. I'm reading some articles that have led me to believe that this setup may not be possible in Exchange 2010. I have successfully been able to redirect the default website in IIS to the OWA directory to simplify the OWA URL in 2010, but will this cause the other virtual directories to stop working properly? I have configured my test environment according to this article. Is it possible to have one URL for all of the CAS services in Exchange 2010? If so, how do I make it happen?