On 10/02/2020 13:51, Alex wrote: > Hello Rowland, > > Thank you for such a quick reply! > > It's Centos 7. Samba 4.11.6 was built from sources. Where did the domain start from ? 2008R2 or earlier ? Are the existing DCs DNS servers ? It seems to be having problems finding the 'DomainDnsZones' object. Rowland