[Samba] How to add Conditional Forwarders in Samba4 with Bind9_DLZ?

[Julian Timm]

Hi! We need to add a Conditional Forwarder to our Samba4 Domain.
With the DNS Snap-In from Microsoft i can reate Zones, but if i try to
add a Conditional Forwarder, i get an error message that this is not
supported by the server.

How i can add a Conditional Forwarder with Samba4 and Bind9_DLZ Backend?

Thanks for help!