Google Outbound Services Configuration Guide - Manual (Page 12)

Introduction to Outbound Configuration 13
Prerequisites
Outbound Services is an optional feature. For more information about your
service package and options, contact your account manager or vendor.
Before you configure Outbound Services, you need a server that can:
• Allow a safe private relay from an external address
• Route outbound mail using a smarthost (a server that accepts outbound mail
and passes it on to the recipient) or an external DNS (a server that provides
routing information, for supported servers).
• Send mail from a consistent IP address
Instructions are included in this guide for most common mail servers. If you are
using another server not listed in this guide, consult your server documentation to
find out how to allow a private relay and set up a smarthost (or external DNS
server).
Also, for information about Outbound Services, see the Outbound chapter of the
Message Security Administration Guide.
Identify Your System
Before you allow reinjection or set up a smarthost (or external DNS server), you
will need to know which system number you are using. The email security service
includes multiple independent systems.
To determine the system for your account: Your system number is shown the URL
when you log in to the Administration Console or Message Center. The system
number is prefaced by
ac-s or mc-s . For example:
URL displayed for an account on System 8 when logged in to the Administration
Console:
https://ac-s8.postini.com/exec/adminstart?
URL displayed for an account on System 200 when logged in to the Message
Center:
https://mc-s200.postini.com/app/msgctr/junk_quarantine
IP Ranges
You will need to enter an IP range to allow a private relay. The proper IP range
depends on your system number in the email security service. To find your system
number, see “Identify Your System” on page 13.
The following are the IP ranges for the email security service systems.