Thank you for your answer. I think I don’t understand entierely, but I Have made some cleaning In my domain.
Currently, I Just have A dyndns to nextcloud.it-switch.com and a cname from www.it-switch.com to nextcloud.com (In the futur a True www will exist…)
Currently, the traffic is redirect to my NGinx reverse Proxy then to my Apache web server (other vm).
If I run"sudo certbot certonly -d nextcloud.it-switch.com --dry-run" I have:
