Certbot failed to authenticate domain

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: www.aisearching.online

I ran this command: sudo certbot --nginx -d aisearching.online -d www.aisearching.online

It produced this output:
Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:

  • Domain: www.aisearching.online*
  • Type: dns*
  • Detail: DNS problem: NXDOMAIN looking up A for www.aisearching.online - check that a DNS record exists for this domain; DNS problem: NXDOMAIN looking up AAAA for www.aisearching.online - check that a DNS record exists for this domain*

Hint: The Certificate Authority failed to verify the temporary nginx configuration changes made by Certbot. Ensure the listed domains point to this nginx server and that it is accessible from the internet.

Some challenges have failed.

My web server is (include version): nginx version: nginx/1.18.0 (Ubuntu)

The operating system my web server runs on is (include version): Ubuntu 22.04.2 LTS

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): certbot 1.21.0

I've just added an A type dns record at Google Domains if that helps and I've been following this instruction page https://www.slingacademy.com/article/how-to-deploy-a-next-js-app-on-ubuntu-with-nginx-and-lets-encrypt/

Also for the www subdomain?

Because currently I cannot see it: www.aisearching.online | DNSViz


Ok got it. I hadn't appreciated that. I will give it a try.

Thank you very much.

1 Like

That's done it. Thank you so much.


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