Error while attempting to generate certificate: NXDOMAIN looking up A for


Hi guys,

I’m getting the following message while attempting to generate a certificate for my nginx reverse proxy.

vinod@nginxproxy:~$ sudo certbot --nginx
[sudo] password for vinod:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx
No names were found in your configuration files. Please enter in your domain
name(s) (comma and/or space separated) (Enter ‘c’ to cancel):
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. (http-01): urn:ietf:params:acme:error:dns :: DNS problem: NXDOMAIN looking up A for

-The following errors were reported by the server:

Type: None
Detail: DNS problem: NXDOMAIN looking up A for

Im quite a newbie with certbot, can anyone point in the right direction?


What’s your domain? Apparently it isn’t registered, or doesn’t have any DNS records.

Or, if the request was for a subdomain, maybe that didn’t exist.

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., 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:

It produced this output:

My web server is (include version):

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know):

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):


This is a bit concerning:

Are you familiar with NGINX?


Found out that the issue was due to my domain being not registered. Thanks for pointing that one out.

Guess there still some work to be done before i can generate the certs.


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