[Samba] Failover DC did not work when Main DC failed

[Paul Littlefield]

On 31/01/2020 13:15, Rowland penny via samba wrote:
> Each DC should use itself as its DNS nameserver, but your clients should be able to use any DC for their DNS nameserver. You need to consult your OS's documentation to see how DNS failover should be set up. That is, if your client attempts to contact a particular DNS server running on a DC and it doesn't answer, it goes to the next DC DNS server without any real delay.

I have checked on a few desktops in the office and all of them have both DCs as their DNS servers.

When I test with a command prompt and nslookup for either the top-level domain or any server within the domain they give the correct IP addresses - both using forward and reverse DNS checking.

I have followed through the Samba Wiki pages of Troubleshooting and all the desktops pass the DNS and SRV tests etc.

What else can I check or test?!

Regards,

Paul