I was testing out a different service in the meantime thats why I removed the udp part in the config. I have now reverted it back to what I had in the first place. To get the error you will need a machine without a nat because the packages will never arrive from the different ip because they are not on the nat table.
`root@ubuntu-s-1vcpu-1gb-fra1-01:~# dig @213.188.193.229 test.com
;; reply from unexpected source: 185.178.200.130#53, expected 213.188.193.229#53
;; reply from unexpected source: 185.178.200.130#53, expected 213.188.193.229#53
;; reply from unexpected source: 185.178.200.130#53, expected 213.188.193.229#53
; <<>> DiG 9.16.1-Ubuntu <<>> @213.188.193.229 test.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached`