1. In powershell :
Add-ADPermission -InheritedObjectType User -InheritanceType Descendents -ExtendedRights Send-As -User “BESAdmin” -Identity “DC=MonDomaine,DC=COM”
2. To validate that the command worked :
Get-Mailbox -Identity “Affichage du nom d’usager” | Get-ADPermission | where { ($_.ExtendedRights -like”*Send-As*”) -and -not ($_.User -like “NT AUTHORITY\SELF”) } | select Identity, User, ExtendedRights, IsInherited | FT -Wrap