You have an Exchange Server 2010 organization. All users connect to their mailbox by using Microsoft Outlook 2013 and Ou

[answerhappygod]

You have an Exchange Server 2010 organization.
All users connect to their mailbox by using Microsoft Outlook 2013 and Outlook Web App. All client connections to Exchange Server use the name mail.contoso.com.
You deploy Exchange Server 2013 to the organization, you move all of the users to Exchange Server 2013, and then you decommission all of the Exchange
Server 2010 servers.
The users report that when they open Outlook 2013, they receive a certificate warning message.
The users do not receive a certificate error message or a certificate warning message when they open Outlook Web App.
You need to prevent the certificate warning message from occurring when the users open Outlook 2013.
Which cmdlet should you run?

A. Set-ClientAccessServer
B. New-ExchangeCertficiate
C. New-ClientAccessArray
D. Import-ExchangeCertificate