Active Directory Object Synchronisation
The following table describes the Active Directory object types and their synchronisation status when using the AD Connect client or service.
AD Connect (on-premise) with Exchange Server 2010 or below
AD Connect (on-premise) with Exchange Server 2016 or later
AD Connect (Azure) with Exchange Online / Office 365
No (requires permissions)
Contact, MailContact, MailForestContact
Public Folder, PublicFolderMailbox
Yes (<= v2.6)
No (> v2.6)
Please note that even if an object is synchronised it does not mean that it will be subject to billing. Please review the Product Usage guidelines.