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. https://crt.sh/?q=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:
sudo certbot renew --dry-run
It produced this output:
Cert is due for renewal, auto-renewing... Renewing an existing certificate Performing the following challenges: http-01 challenge for www.williamocaldwell.com Waiting for verification... Cleaning up challenges Attempting to renew cert from /etc/letsencrypt/renewal/www.williamocaldwell.com.conf produced an unexpected error: Failed authorization procedure. www.williamocaldwell.com (http-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: SERVFAIL looking up CAA for williamocaldwell.com. Skipping. ** DRY RUN: simulating 'certbot renew' close to cert expiry ** (The test certificates below have not been saved.)
IMPORTANT NOTES: - The following errors were reported by the server: Domain: www.williamocaldwell.com Type: connection Detail: DNS problem: SERVFAIL looking up CAA for williamocaldwell.com To fix these errors, please make sure that your domain name was entered correctly and the DNS A record(s) for that domain contain(s) the right IP address. Additionally, please check that your computer has a publicly routable IP address and that no firewalls are preventing the server from communicating with the client. If you're using the webroot plugin, you should also verify that you are serving files from the webroot path you provided.
My web server is (include version):
nginx version: nginx/1.10.3 (Ubuntu)
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): N/A
All of my DNS setting appear to be correct. I understand that Let’s Encrypt doesn’t care about CAA but must get some response. Any ideas where to check next?