You have an Exchange Server 2010 Hub Transport server named Hub1. You install an application on a third-party server named Server1. You discover that the application cannot authenticate to remote servers. You need to ensure that the application can relay e-mail messages by using Hub1.

What should you do?

A.
Create a new Send connector
Add the TCP/IP address of Server1 to the Send connector
Modify the permissions for the Send connector

B.
Create a new Receive connector
Add the TCP/IP address of Server1 to the Receive connector
Modify the permissions for the Receive connector
Add the TCP/IP address of Server1 to the default Receive connector

C.
Create a message classification
Create a transport rule
Add the TCP/IP address of Server1 to the Client Receive connector

D.
Create a remote domain

E.
Create a transport rule