Google Outbound Services Configuration Guide - Manual (Page 123)

Qmail 133
Qmail
Chapter 15
About Qmail
Qmail is a mail transfer agent that runs on UNIX. Qmail has not been updated by
the author for several years and users have instead come to rely on third party
patches to support new functionality.
Qmail is nearly a completely modular system in which each major function is
separated from the other major functions. It is easy to replace any part of the
Qmail system with a different module as long as the new module retains the same
interface as the original.
These instructions provide steps to route mail to Outbound Services and are
designed to work with a majority of Qmail deployments.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 Qmail and the configurations
that Postini recommends. These instructions are designed to work with the most
common Qmail scenarios. Any changes to Qmail configuration should be made at
the discretion of your Qmail administrator.
Note: Postini Customer Care does not provide technical support for configuring
mail servers or third-party products. In the event of a Qmail issue, you should
consult your Qmail administrator. POSTINI ACCEPTS NO RESPONSIBILITY
FOR THIRD-PARTY PRODUCTS. You may also contact Postini Professional
Services for consulting services and options.
Links to Qmail 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.