You need to ensure that SMTP e-mail messages can be delivered when the messages are sent to addresses that end with @fourthcoffee.com and are intended for the Exchange Server 5.5 environment. Which three courses of action should you perform？（）

A. Create mail-enabled contacts in the fourthcoffee.com domain for each Exchange Server 5.5 recipient. Establish the e-mail address to have an address that ends with @oldmail.fourthcoffee.com
B. Create mail-enabled contacts in the fourthcoffee.com domain for each Exchange Server 5.5 recipient. Establish the e-mail address to have an address that ends with @fourthcoffee.com
Configure each Exchange Server 5.5 recipient to have an address e-mail address that ends with @oldmail.fourthcoffee.com. Set the @oldmail.fourthcoffee.com address to be the default reply address
D. Configure each Exchange Server 5.5 recipient to have an additional e-mail address that ends with @oldmail.fourthcoffee.com. Set the @fourthcoffee.com address to be the default reply address
E. Configure each Exchange Server 5.5 recipient to use a single SMTP address that ends with @oldmail.fourthcoffee.com
F. Configure an SMTP connector between the Exchange Server 2003 routing group at the Sydney office and the Exchange Server 5.5 site at the Sydney office. Configure the connector namespace to be oldmail.fourthcoffee.com
G. Configure an SMTP connector between the Exchange Server 2003 routing group at the Sydney office and the Exchange Server 5.5 site at the Sydney office. Configure the connector namespace to be fourthcofee.com