Wonderful, this worked like a charm!
Thank you so much!

I tried searching google, too.
But the only info I found was on how to set up your own DNS server - which I alread had with pi-hole.
You seem to have used a significatly better choice of search-words.

Hello!
Since i’m using the Spotify-Module, I see over 1.000 DNS-queries per 10 minutes to api.spotify.com from my mirror in pi-hole.
Is there a way to turn on dns-caching in raspbian, so that the module doesn’t have to ask my DNS server every second?
Thanks!