Pihole Setup - Having Plex and Qbittorrent issues

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@ruben

Secondary DNS is 8.8.8.8 both are optional fields

Don't do this. Given multiple DNS Servers, clients are free to use any of them at any time.

Why should Pi-hole be my only DNS server?

Reduced Ad Blocking Capability The main reason you should Pi-hole as your only DNS server is that you will see increased performance in the blocking of ads. If you have two DNS servers (Pi-hole and something else), your network clients may not always query Pi-hole for name resolution. If a query happens to be answered from a non-Pi-hole DNS server, your block lists will not apply (since that DNS server doesn't know about them). All Queries Need To Go Through Pi-hole First Since other DNS serv…

@ruben

In Pi hole web interface this is empty,

Which empty block is of concern?

@ruben

My plex server (Windows Machine) is having issues with remote access
Qbit torrent client stopped working
Radarr was having issues

Is Pi-hole blocking any domains from the client(s) running that software?