YouhaveaHubTransportservernamedServer1thatrunsExchangeServer2010.AllExchangeusersuseIMAP4toretrievee-mail.Youneedtoensurethatalluserscansende-mailbyusingSMTP.Yoursolutionmustnotrequireanymodificationstothedefaultconnectors.Whatshouldyoudo？（）
A.ConfigureIMAP4clientstosende-mailbyusingTCPport25.
B.ConfigureIMAP4clientstosende-mailbyusingTCPport587.
C.CreateanewSendconnectorandconfiguretheconnectortouseport110.
D.CreateanewSendconnectorandconfiguretheconnectortouseport143.
参考答案：B
