You may see an Outlook error "The name of the security certificate is invalid or does not match the name of the site." if you order a UCC cert.  This is because you cannot add your internal server names to the certificate.  Therefore, it is necessary to change where Outlook clients connect.\n \nSet-ClientAccessServer –Identity cas –AutodiscoverServiceInternalUri https://mail.myCAS.com/autodiscover/autodiscover.xml\nSet-WebServicesVirtualDirectory –Identity “EWS (Default Web Site)” –InternalUrl https://mail.myCAS.com/ews/exchange.asmx\nSet-OABVirtualDirectory –Identity “oab (Default Web Site)” –InternalUrl https://mail.myCAS.com/oab\nIf you are utilizing the Unified Messaging Service (UMS), you will also need to input the following:\nSet-UMVirtualDirectory –Identity “unifiedmessaging (Default Web Site)” –InternalUrl https://mail.myCAS.com/unifiedmessaging/service.asmx