Microsoft Exchange Server 2013: Connectivity, Clients, and UM

Designing namespaces

You will often hear the term “namespace” bandied about when discussions turn toward the CAS role. In this context, “namespace” is essentially a fancy way of saying “URL” or “FQDN.” The namespace used for a particular protocol is whatever URL or FQDN clients running that protocol connect to. (“Namespace” has different and much more complex connotations when used to refer to XML documents, C# or C++ programs, and other fields.) For example, an Exchange 2010 RPC client access array might have a namespace of mail.contoso.com, but the namespace for Outlook Web App in the same environment might be owa.contoso.com. The process of designing namespaces for Exchange 2007 and Exchange 2010 is complex and error-prone, and Microsoft has ...