XIMS: Rerouting SMTP Mail to Another Organization

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Scenario

• Two Exchange Organizations on the same segment:
• Org1: Microsoft (domain: Microsoft.com) (Site:abc) (Server:123)
• Org2: Microsoft-Europe (domain: Microsoft-Europe.com and Microsoft-Africa.com) (Site:def) (Server:456)
• MX records for all domains are pointing to the Exchange Server (Microsoft)

Configuration

1. On the Microsoft-Europe Organization, open the Internet Mail Service Properties page, and on the Routing tab, remove the Microsoft.com domain.
2. Keep the Microsoft-Europe.com and Microsoft-Africa.com domains as inbound.
3. Stop and re-start the Internet Mail Service.
4. On the Microsoft Organization, open the Internet Mail Service Properties page, and on the Routing tab, remove all domains except Microsoft.com; keep Microsoft.com as inbound only.
5. Go to the Connections tab, and under Message Delivery, click E-mail Domain. In the Forward all messages for this domain to host box, add the Microsoft-Europe.com and Microsoft-Africa.com domains, and enter the IP of the Microsoft-Europe mail server.
6. Stop and re-start the Internet Mail Service.
7. Make sure that either Domain Name System (DNS) is configured with correct host records, or use the Hosts file for proper hostname resolution.