Your network contains an Active Directory domain named

contoso.com. The domain contains Windows 10 Enterprise client computers.

Your company has a subscription to Microsoft Office 365. Each user has a mailbox that is stored in Office 365 and a user account in the contoso.com domain. Each mailbox has two email

addresses.

You need to add a third email address for each user.

What should you do?

A. From Active Directory Users and Computers, modify the E-mail attribute for each user.

B. From Microsoft Azure Active Directory Module for Windows PowerShell, run the

Set

–

Mailbox

cmdlet.

C. From Active Directory Domains and Trust, add a UPN suffix for each user.

D. From the Office 365 portal, modify the Users settings of each user.

Explanation:

We can use the Set-Mailbox cmdlet to modify the settings of exi

sting mailboxes.

The EmailAddresses parameter specifies all the email addresses (proxy addresses) for the recipient, including the primary SMTP address. In on-premises Exchange organizations, the primary SMTP address and other proxy

addresses are typicall

y set by email address policies. However, you can use this parameter to configure other proxy addresses for the recipient.

To add or remove specify proxy addresses without affecting other existing values, use the following syntax:

@{Add=-[]:

dress1>-,-[]:-…; Remove=-[]:-,-[]:-…}.

References:

https://technet.microsoft.com/en-us/library/bb123981(v=exchg.160).aspx