It's been quietly spinning on our mail server for a couple of years and it works just as you'd expect it to. Block ratio is around 50%, with no notable effects on browsing experience. It also blocks various in-game ads on the iOS devices. I update the blacklist now and then, may be once every 4-5 months if that, but it's largely maintenance-free.
https://github.com/apankrat/dnswhisperer
It's been quietly spinning on our mail server for a couple of years and it works just as you'd expect it to. Block ratio is around 50%, with no notable effects on browsing experience. It also blocks various in-game ads on the iOS devices. I update the blacklist now and then, may be once every 4-5 months if that, but it's largely maintenance-free.