Google Message Continuity Setup and Administration Guide - Manual (Page 5)

Getting Started 7
Getting Started
Chapter 1
About Google Message Continuity
Google Message Continuity (GMC) is a disaster recovery solution for Microsoft®
Exchange based on Google Apps and Postini Services. Message Continuity
enables you to use Gmail as a backup during planned and unplanned outages.
GMC delivers your organization's messages to both your primary mail server and
to Gmail, which ensures that your organization never loses access to email.
Changes made by users are synchronized between the primary mail server and
Gmail. During an outage, you can then log in to Gmail to access your messages.
At the end of the outage, changes you make in Gmail are synchronized with
Outlook. This includes messages that you send from Gmail to other users, new
messages that you receive while using Gmail during the downtime, messages
that you mark as read or starred, and changes that you make to folders and
labels.
Message Continuity is an optional service available as an addition to Google
Message Security and Google Message Discovery.
Important: For an overview of the setup steps, see “Steps for Setting Up Google
Message Continuity” on page 11. You must follow all of the steps in this guide to
set up your Google Message Continuity service. Be sure that you follow the steps
in sequence.