Google Activation Guide Postini Email Security - Manual (Page 10)

Choose Your Rollout Strategy 13
Choose Your Rollout Strategy
Once you’ve completed the Setup and Activation Wizard, it’s time to decide your
next steps. Choose one of the following two options for your rollout strategy:
• Change your MX records first, and then later add users and set up your
service in the administration console.
• Add users and set up your service first, and then change your MX records
later.
IMPORTANT: Whichever strategy you choose, you’ll need to finish both of these
steps to complete your activation.
Note that both deployment strategies are effective options for getting started with
the message security service.
Add Users and Set Up Your Service First
If you are replacing an existing hosted solution, and if you don't want to leave a
short gap in the spam and virus protection for your organization, you may want to
add your users to the message security service first, as well as configure settings.
To continue with your activation, see “Add Users and Set Up Your Service”
on page 47.
Change Your MX Records First
If you prefer to test your MX records and test mail flow before adding all of your
users, you can flip MX records first.
To continue with your activation, see “Change Your MX Records” on
page 15.