MagicDNS is not magic

Hi,

I’ve enabled tailscale on 4 linux vps’s, 3 of which have domain names pointed at them. How can your magic DNS software, which won’t accept my nameservers IP address, not pick this up? Its DNS. They have IP addresses which have global DNS names resolving to them, so how can this “DNS” software as you so hopefully call it, NOT pick this up?