A simple question to this community, what are you self-hosting? It’s probably fun to hear from each-other what services we are running.
Please mention at least the service (e.g. e-mail) and the software (e.g. postfix). Extra bonus points for also mentioning the OS and/or hardware (e.g. Linux Distribution, raspberry pi, etc) you are running on.
Why are you running 2 piholes? Is it so you can also run your secondary DNS?
Backup for redundancy. Keep the wife happy when I take one down for maintenance etc.