In some environments, it may be required to allow users to send email messages from a mailbox as if the owner of that mailbox had actually sent that message. This can be accomplished by granting Send-As permissions to a user on a particular mailbox. In addition, you can also allow a user to send email messages that are sent using the identity of a distribution group. This recipe explains how you can manage these permissions from the Exchange Management Shell.
Sending email messages as another user or group
How to do it...
To assign Send-As permissions to a mailbox, we use the Add-ADPermission cmdlet:
Add-ADPermission "Frank Howe" ' -User "Eric Cook" ' -AccessRights ExtendedRight &apos...