Microsoft Exchange Server 2013: Mailbox and High Availability

Namespace planning

Namespace planning describes the activity companies go through to determine the public connectivity points that will be offered to clients that wish to access email services through the Internet and how those connections will be secured. The most basic situation occurs when a single connectivity point such as mail.contoso.com is used to access all Exchange services, including ActiveSync for mobile clients, Outlook Anywhere, Outlook Web App and Exchange Administration Center for browser access, and Exchange Web Services. Because Exchange uses Secure Socket Layer (SSL)-based client–server connections across the Internet, you also need to install certificates to prove that the services are offered by the company and not by an imposter. ...