[Samba] samba_dns_question

[Hajdu Szabolcs]

Hello,

We have fairly large computer park ~100 computers and we want to switch 
to samba. I installed a new Ubuntu 18.04 LTS fully updated installed 
samba, after AD join the domain part works i can see users computers and 
the server, the samba machine is a domain controller the problem is the 
DNS with this much machines i wanted to use the BIND back-end. The 
existing environment has 5 vlans with different IP networks the Windows 
DNS has five reverse zones every time when i join samba creates 10 
reverse zones five with a CNF name and gives this error:

zone 
100.168.192.in-addr.arpa\010CNF:afe341a2-4c56-4061-bd9f-60277bfc75b3/NONE: 
has 0 SOA records
named[3700]: zone 
100.168.192.in-addr.arpa\010CNF:afe341a2-4c56-4061-bd9f-60277bfc75b3/NONE: 
has no NS records
named[3700]: samba_dlz: Failed to configure zone '100.168.192.in-addr.arpa
CNF:afe341a2-4c56-4061-bd9f-60277bfc75b3'
named[3700]: loading configuration: bad zone
named[3700]: exiting (due to fatal error)

if i do a samba-tool dns zoneinfo only the samba server has this zone 
the rest doesn't and I can't delete it with samba-tool dns zonedelete.

Somebody has a solution for this problem i have to delete the reverse 
zones from the AD forest?

Thank you

Szabolcs