Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
I ran this command: I use the Synology configuration tool: Control Panel, then Security, then Certificate.
It produced this output: “Echec de la connexion à Let’s Encrypt. Assurez-vous que le nom de domaine est valide.”
My web server is (include version): Apache2
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is: I use DDNS (Synology).
I can login to a root shell on my machine (yes or no, or I don’t know): Yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): Yes, the Synology one.
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you’re using Certbot):
Yesterday, I felt into another error : “too many certificates already issued …”
I was trying to renew my certificate alreday installed on this Synology server. Today, I did not get this error (up to now!).
Thank you in advance for you help.