单选题You have a Hub Transport server named Server1 that runs Exchange Server 2010.All Exchange users use IMAP4 to retrieve e-mail.You need to ensure that all users can send e-mail by using SMTP.Your solution must not require any modifications to the default
题目
单选题
You have a Hub Transport server named Server1 that runs Exchange Server 2010.All Exchange users use IMAP4 to retrieve e-mail.You need to ensure that all users can send e-mail by using SMTP.Your solution must not require any modifications to the default connectors. What should you do？（）
A
Configure IMAP4 clients to send e-mail by using TCP port 25.
B
Configure IMAP4 clients to send e-mail by using TCP port 587.
C
Create a new Send connector and configure the connector to use port 110.
D
Create a new Send connector and configure the connector to use port 143.