Multiple Organizations send and receive email as one
Posted on 2011-02-24
I have an interesting project where 3 seperate companies have merged and want to meet the following ojective.
1) Sync GAL and Calendar
2) Send and receive email as a single unified entity, MergedCo.com
The companies are all running Exchange 2003 03 2007 Organizations and are on Windows 2003 AD.
There is a proposed migration to a single AD/Exchange Org, but that is later down the road. In the meantime it is critical for the to send and receive email as a unified entity.
Here is what I was thinking:
1) GAL Sync/Calendar Sync - use Forefront identity mgr to sync GAL.
Not sure if this also syncs Calendars??
2) Mail Flow as a single co.
a. all email for MergedCo.com flows to a single environment and gets forwarded to other Orgs by using imported contacts and routing group connectors.
b. each contact will contain a distinguishing SMTP alias scoped to the correct connector for internal mail delivery.
b. all (3) Organizations assign MergedCo.com as the primary SMTP address for their users
c. each Organizations continues to be responsible for it's own outward mail flow
(Create a 2nd and 3rd public MX record to resolve back to the other Orgs public IP range
and set at very high cost so mail continues to deliver to the single environment)
Let me know if I am on the right path here, any commnets and suggestions are appreciated.