Check this out. I’ve been using it with 3 nodes for years and it works perfectly.

https://github.com/TechnitiumSoftware/DnsServer/issues/231#issuecomment-783114395

I stopped using pihole years ago because it didn’t support wildcards. Technitium DNS server is fantastic. The dev is super responsive and keeps things updated.

I use one of these VMs for two things. Monitoring my network back home using Uptime Kuma and Tailscale. As well as as a Tailscale exit node (essentially a VPN).

I was an email administrator for 6 years. I’ve ran every hosted mail service you can possibly think of. My advice: DON’T DO THIS!