Re: Windows Server
Also, at the moment, Chrome and Firefox disrespect your own DNS settings and use their own DNS servers (Google and Cloudflare by default, respectively), whereas non-browser DNS respects the operating system settings.
I suspect that that is the part that the ISPs don't like. It is certainly the part I don't like, because I have a carefully curated DNS server on my network, the last thing I want is my browser to arbitrarily ignore my settings.
Blocking DoH to known Google and Cloudflare DNS servers was my solution to the problem. I could see disreputable IPSs doing that as well.
