Google Outbound Services Configuration Guide - Manual (Page 29)

Microsoft Exchange 2007/2010 (Private DNS Method) 31
Microsoft Exchange 2007/2010 (Private
DNS Method)
Chapter 3
About Microsoft Exchange 2007/2010 (Private DNS Method)
Microsoft® Exchange Server 2007 is designed as a high-end, scalable system,
with servers set up to work together in a large email network.
Smarthost solutions for Microsoft Exchange can cause mail queueing delays.
Private Outbound DNS Service is designed to ease setup and prevent queueing
delays. These steps show how to set Microsoft Exchange 2007 to use Private
Outbound DNS to route mail to the email security service.
Private Outbound DNS is recommended over smarthost for Exchange 2007. To
use a traditional smarthost method, see “Microsoft Exchange 2007 with an Edge
Server (Smarthost method)” on page 83 for networks that include an Edge server,
and “Microsoft Exchange 2007 without an Edge Server (Smarthost method)” on
page 65 for networks that do not include an Edge server.
These instructions provide steps to route mail to Outbound Services and are
designed to work with a majority of Microsoft Exchange 2007 deployments.
Microsoft Exchange 2007 includes a concept that has not existed in previous
versions of Microsoft Exchange: different servers are assigned distinct, concrete
roles
. Two important roles are the Hub server and the Edge server. The Hub
server is the center of message routing. The Edge server provides a connection
with the outside internet. not all networks use an Edge server.
You will make most changes on the Hub server.
Microsoft Exchange 2010 uses the same steps for setting up Private DNS. If you
are using Microsoft Exchange 2010, follow these steps to set up outbound with
Private DNS.