I am running a server with Ubuntu Linux 20.04.2 with Virtualmin 6.16 Pro
Some weeks ago I got a message that the Let’s Encrypt certificate of one of my domains couldn’t be renewed.
This week I also got this message for that same domain: "Some virtual servers’ DNS registrations have expired: "
Everything seems to be running fine for all the other domains except for this one.
The problem still maintains when I erase the virtual server and create a new one from the scratch
It seems there is a DNS but I don’t find anything abnormal.
Where should I start to look and what do you need to help me?
Thanks in advance