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: hardebol.nl
I ran this command: /usr/bin/certbot certonly -d www.hardebol.nl
It produced this output: Certbot failed to authenticate some domains (authenticator: apache). The Certificate Authority reported these problems:
Domain: www.hardebol.nl
Type: dns
Detail: DNS problem: query timed out looking up A for www.hardebol.nl; DNS problem: query timed out looking up AAAA for www.hardebol.nl
My web server is (include version): Apache/2.4.29 (Ubuntu)
The operating system my web server runs on is (include version): Ubuntu 18.4.6 LTS
My hosting provider, if applicable, is: self hosted
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 1.31.0
I have several websites that I can easily get a certificate for. But some give the above error.
I have been struggeling with this for weeks. I tested my DNS against almost every dns checker out there. No firewall is blocking anything. Port 53 is open for both UDP and TCP.
Neither of the Authoritative Name Servers are serving up answer for the Domain Name; this is a DNS issue.
$ nslookup
> hardebol.nl
Server: 127.0.0.1
Address: 127.0.0.1#53
Non-authoritative answer:
Name: hardebol.nl
Address: 92.67.169.193
> set q=soa
> hardebol.nl
Server: 127.0.0.1
Address: 127.0.0.1#53
Non-authoritative answer:
hardebol.nl
origin = ns1.hardebol.nl
mail addr = hostmaster.hardebol.nl
serial = 2022102509
refresh = 28800
retry = 7200
expire = 1209600
minimum = 86400
Authoritative answers can be found from:
> server ns1.hardebol.nl
Default server: ns1.hardebol.nl
Address: 92.67.169.193#53
> set q=a
> hardebol.nl
;; connection timed out; no servers could be reached
> server ns2.hardebol.nl
Default server: ns2.hardebol.nl
Address: 84.87.53.162#53
> hardebol.nl
;; connection timed out; no servers could be reached
>
Since these are Domain Validation (DV) certificates the Domain Name System (DNS) is used extensively in the validation process as well a allowing us to assist here on Let's Encrypt community.
DNS Queries need to give consistent results from any location on the Internet, all your authoritative DNS Servers for the Domain need to also give consistent results as well.
Testing and debugging are best done using the Staging Environment as the Rate Limits are much higher. Rate Limits are per week (rolling).
And to assist with debugging there is a great place to start is Let's Debug.
