You have an Exchange Server 2010 SP1 organization.

The organization contains two mailbox-enabled users named user1 and user2

You need to ensure that user1 can send email messages on behalf of user2

Which cmdlet should you use?

A.
Set-MailUser

B.
Set-MailboxFolderPermissions

C.
New-TransportRule

D.
Set-Mailbox

E.
New-MailContact

F.
New-ManagementScope

G.
New-ManagementRoleAssignment

H.
Set-Group

I.
Set-ManagementRoleAssignment

J.
Add-ADPermission

Explanation:
Set-Mailbox. e.g.- Set-Mailbox user2 -GrantSendOnBehalfTo user1