You have an Exchange Server 2013 organization that contains two Client Access servers named SERVER1 and SERVER2 and two

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You have an Exchange Server 2013 organization that contains two Client Access servers named SERVER1 and SERVER2 and two Mailbox servers named
SERVER3 and SERVER4.
You have a firewall that controls all of the traffic between the internal network and the Internet.
SERVER3 and SERVER4 are prevented from communicating with Internet hosts.
SERVER1 and SERVER3 are in a site named Main. SERVER2 and SERVER4 are in a site named Main_2.
All outbound email is sent through SERVER1.
Main fails.
You discover that email messages for the Internet are queued on SERVER4.
You create a new send connector in Main_2.
You discover that all of the outbound email is queued on SERVER4 and is not delivered to the Internet.
You verify that the client computers on the network can receive email messages from the Internet successfully.
You need to ensure that the email messages are delivered successfully to the Internet.
Which cmdlet should you run?

A. Set-SendConnector
B. Set-TransportService
C. Set-ExchangeServer
D. Set-ADSite