You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single ActiveDirectory domain named testking.com. TestKing.com is configured to run an exchange 2010 environment.  TestKing.com contains an Exchange Server 2010 Hub Transport server named TESTKING-EX10 and athird party server TESTKING-EX11 that host a mission critical application. However， during a routinemonitoring you become aware of that the mission critical application is not able to authenticate to remoteservers. You have received instructions form the CIO to make sure that the mission critical application cansend e-mail messages with the use of TESTKING-EX10. What should you do？（）

• A、The best option is to create a new Receive connector and put the TCP/IP adress of TESTKING-EX11 to the Receive connector.Thereafter， change the Receive connector’s permissions.
• B、The best option is to add the TCP/IP address of TESTKING-EX11 to the default Receive connector.Thereafter you need to set up a message classification and a transport rule.
• C、The best option is to add the TCP/IP address of TESTKING-EX11 to the client Receive connector.Thereafter you need to set up a remote domain and a transport rule.
• D、The best option is to create a new Send connector and put the TCP/IP address of TESTKING-EX11 to the Send connector.Thereafter， change the Send connector’s permissions.