w32tm NTP Time Server Configuration on Domain Controller
w32tm NTP server configuration on DC - How to configure a production domain controller as an NTP server (time server). This video also contains a registry settings configuration for a multi-domain environment
commands to be used for NTP server:
"w32tm /config /syncfromflags:DOMHIER /reliable:no /update"
w32tm /query /source
w32tm /Query /source