You work as the enterprise exchange administrator at Xxx .The Xxx network is running in a Microsoft Exchange Server 2010 environment.You are responsible for managing an Exchange Server 2010 server named XXX-EX02 that has IMAP4 installed.What actions must you take to determine the ability of users to e-mail hosts on the Internet？（）

• A、You must connect to port 587， from a workstation.
• B、You must use the Get-MessageTrackingReport cmd.
• C、You must enable the Receive connectors and Send connectors.
• D、You must use the Remote Connectivity Analyzer.