Second time that the virtualmin nameservers are SERVFAIL. I recognized, that the resigning failed and the key was expired.
The thing was recovered by adding and removing an A record in the authoritative NS zone, but I recognized that
named-setup-rndc.service was set to Start at Boot "Always" but Running says "No"
I am not sure if it has to do something with the issue. Should this be running?
crontab -l 49 16 * * * /etc/webmin/bind8/resign.pl is running though...