Google Outbound Services Configuration Guide - Manual (Page 21)

Microsoft Exchange 2003 (Private DNS Method) 23
Microsoft Exchange 2003 (Private DNS
Method)
Chapter 2
About Microsoft Exchange 2003 (Private DNS Method)
Microsoft® Exchange Server 2003 is designed as a high-end, scalable system.
Microsoft Exchange 2003 servers can be set up to work together in a large email
network. It is possible to route all outbound mail through the Email Security Server
without affecting the flow of internal mail between servers.
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 2003 to use Private
Outbound DNS to route mail to the email security service.
Private Outbound DNS is recommended over smarthost for Exchange 2003. To
use a traditional smarthost method, see “Microsoft Exchange 2000/2003 Single
Server (Smarthost method)” on page 47 for single-server environments, or
“Microsoft Exchange 2000/2003 Multi-Server (Smarthost method)” on page 55 for
multi-server environments.
These instructions provide steps to route mail to Outbound Services and are
designed to work with a majority of Microsoft Exchange 2003 deployments.
An important concept in Exchange 2000/2003 multi-server environments is the
bridgehead server. A bridgehead server is a mail server that connects to the
Internet. Other servers will route outgoing mail to the bridgehead server, which
forwards mail to the Internet. Most of this configuration in this chapter applies only
to the bridgehead server.
Legal Disclaimer
This guide describes how Postini products work with Microsoft Exchange and the
configurations that Postini recommends. These instructions are designed to work
with the most common Microsoft Exchange scenarios. Any changes to Microsoft
Exchange configuration should be made at the discretion of your Microsoft
Exchange administrator.