Let's Encrypt error message

I keep getting this error message for Let’s Encrypt.

Failed to obtain certificate for domain freedombox.elisa.maria.com: Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator webroot, Installer None Obtaining a new certificate Performing the following challenges: http-01 challenge for freedombox.elisa.maria.com Using the webroot path /var/www/html for all unmatched domains. Waiting for verification… Cleaning up challenges Failed authorization procedure. freedombox.elisa.maria.com (http-01): urn:ietf:params:acme:error:dns :: DNS problem: NXDOMAIN looking up A for freedombox.elisa.maria.com - check that a DNS record exists for this domain

I like to know what I have to do to resolve this? Thank you!
I recived my FBX Pioneer this past weekend, I’m running version 20.7. It’s connected to my Netgear router. I went looking in the router to see if there was a firewall option I could temporary turnoff, thinking that’s the problem?

Machines outside your network (including Let’s Encrypt server) are unable to reach your FreedomBox. You need to ensure two things:

  • Your ISP provides you with a proper public IP address. You can check your WAN IP address in the router.
  • You are necessary forwarding ports (at least 80, 443) in your router from external IP to your FreedomBox address (preferably after making it a static address).
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