[Samba] Samba4 DNS SOA Records

[Julien TEHERY]

Hi

I have a setup with 2 DC on a main site, et 14 DCs which are located on 
7 AD sites.
I recently noticed in my DNS zones that my SOA record is associated to 
the last DC that was joined to the domain.
But this DC is located on one of the remote sites.

Is this behavior normal or would it be better if I updated this record 
via "samba-tool dns update" to point it to one of my 3 main DCs ?