On 10/06/2020 17:05, basti via samba wrote: > joined another DC running Bind9. but dns is not in sync. it looks like samba_dnsupdate hasn't run yet, or it is failing for some reason. Try examining syslog. If all else fails, add 'dns update command = /usr/sbin/samba_dnsupdate --use-samba-tool' to smb.conf on the new DC. Rowland