A corporate environment includes an on-premise deployment of Exchange Server 2010 SP1. The
environment is configured as shown in the following table.

The company plans to move the European employee email accounts to a cloud-based Exchange
Server 2010 SP1 service provider. You have the following requirements:
• Route incoming messages to the appropriate Exchange Server environment.
• Ensure that all employees retain their current email addresses.
• Ensure that MX records do not change.
You need to recommend a solution for meeting the requirements. What should you recommend?

A.
Configure address rewriting. Configure send connectors for the on-premise Edge Transport server
and the cloud-based servers.

B.
Configure an external relay domain for tailspintoys.com. Configure send connectors for the onpremise and cloud-based servers.

C.
Configure address rewriting. Configure send connectors for the on-premise Hub Transport server
and the cloud-based servers.

D.
Configure an external relay domain for wingtiptoys.com. Configure send connectors for the onpremise and cloud-based servers.