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. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is:
I ran this command:
certbot renew --cert-name servmin.duckdns.org --dry-run
It produced this output: Simulating renewal of an existing certificate for servmin.duckdns.org
Certbot failed to authenticate some domains (authenticator: apache). The Certificate Authority reported these problems:
Detail: Fetching http://servmin.duckdns.org/.well-known/acme-challenge/DafWAZIdHFa7zZGDfBwxM-rsghnCERVLH5V3ik0XOEs: Timeout during connect (likely firewall problem)
Hint: The Certificate Authority failed to verify the temporary Apache configuration changes made by Certbot. Ensure that the listed domains point to this Apache server and that it is accessible from the internet.
Failed to renew certificate servmin.duckdns.org with error: Some challenges have failed.
My web server is (include version):
Server version: Apache/2.4.38 (Debian)
Server built: 2021-06-10T10:13:06
The operating system my web server runs on is (include version):
Distributor ID: Debian
Description:Debian GNU/Linux 10 (buster)
My hosting provider, if applicable, is:
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): no
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you're using Certbot):
What can I do about it and what is to be done to make an automatic renewing possible?
thanks for Your attention