Google Apps Technical Transition Guide For Business, Education, and Government - Manual (Page 36)

36 Google Apps Technical Transition Guide
• Read Configure dual delivery to learn more about setting up dual delivery in
your environment.
Determine your final mail routing design
Level of Effort: Moderate
After you set up basic dual delivery for your IT team, you should figure out what kind
of mail routing design you want in place when your transition is complete. In the
simplest and most common case, you transition your mail to Google Apps entirely,
and no mail is routed through your legacy system. However, you may need to
continue routing some or all mail through your legacy system for one of the following
reasons:
• Your legacy system includes journaling or compliance systems that interact with
your legacy mail solution that must remain in place.
• One or more organizations in your company are not transitioning to Google Apps.
When you decide on a mail routing design, follow the mail routing steps for the
remaining phases only if you have not yet reached the design you plan to stick with.