Google Outbound Services Configuration Guide - Manual (Page 126)

Postfix 137
Postfix
Chapter 16
About Postfix
Postfix is an open-source mail transfer agent, used primarily on UNIX-based
servers. It is the default mail server for several operating systems.
Setting up Postfix for Outbound Services requires minimal changes. Add the IP
ranges for the email security service as private relays. Then, register your mail
server in the Administration Console. Last, direct outbound mail to route to
Outbound Services.
There is no need to increase the timeouts for Postfix servers. The default timeout
settings are appropriate.
You can also set up Private Outbound DNS to route mail to Outbound Services.
Private Outbound DNS is often simpler and more reliable than a smarthost
installation. Private Outbound DNS is described in “Option 1: Set Up Private
Outbound DNS” on page 16. For more information, see your mail server product
documentation for information on changing your DNS settings.
Legal Disclaimer
This guide describes how Postini products work with Postfix and the
configurations that Postini recommends. These instructions are designed to work
with the most common Postfix scenarios. Any changes to Postfix configuration
should be made at the discretion of your Postfix administrator.
Note: Postini Customer Care does not provide technical support for configuring
mail servers or third-party products. In the event of a Postfix issue, you should
consult your Postfix administrator. POSTINI ACCEPTS NO RESPONSIBILITY
FOR THIRD-PARTY PRODUCTS. You may also contact Postini Professional
Services for consulting services and options.
Links to Postfix Web sites are provided for your convenience. The links and their
content may change without notice. Please consult the product's Web site for the
latest configuration and support information.