Microsoft® Exchange Server 2003 Unleashed

Using DNS to Route SMTP Mail in Exchange Server 2003

Simple Mail Transfer Protocol (SMTP) has become the standard Internet protocol for electronic mail. Commonly used on Unix and Linux environments, and more recently in Windows, SMTP is used not only for mail delivery across the Internet, but also used within Active Directory as an alternative transport mechanism for site traffic.

Domains that want to participate in electronic mail exchange need to set up MX record(s) for their published zone. This advertises the system that will handle mail for the particular domain, so that SMTP mail will find the way to its destination.

Using DNS in Exchange 2003

Microsoft Exchange Server 2003 uses DNS exclusively for name resolution. In addition to talking ...