I realize this topic is popular, however I still can’t seem to find a solution. It appears I’m having a connection problem. Any help will be appreciated.
Btw, my router is set to allow port 443 connections (it works). Also, I am not a server expert. Also worth noting, I am hosting numerous websites from the same server.
My domain is: skiddlebop.com
I ran this command:
sudo certbot --apache -d skiddlebop.com -d www.skiddlebop.com
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log Obtaining a new certificate Performing the following challenges: tls-sni-01 challenge for skiddlebop.com tls-sni-01 challenge for www.skiddlebop.com Enabled Apache socache_shmcb module Enabled Apache ssl module Waiting for verification... Cleaning up challenges Failed authorization procedure. www.skiddlebop.com (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Error getting validation data, skiddlebop.com (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Error getting validation data IMPORTANT NOTES: - The following errors were reported by the server: Domain: www.skiddlebop.com Type: connection Detail: Error getting validation data Domain: skiddlebop.com Type: connection Detail: Error getting validation data 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): Ubuntu 16.04
The operating system my web server runs on is (include version): Apache 2
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
My problem turned out to be easy to fix. I forgot to enable the SSL module in apache. Here’s the fix:
sudo a2enmod ssl, followed by
sudo service apache2 restart, then followed by
apache2ctl -M to confirm the module was installed.