If you find that going to your URL works (DNS resolves), but it shows the wrong site on your server (your default site, alphabetically, from /var/www/), and, letsencrypt says no such site, and, a2enablesite says, no such site... then it's quite simple. The config file is missing or wrong in /etc/apache2/ Possible problems: 1. Wrong permissions on the config file. 2. The config file is in sites-available but not sites-enabled 3. The config file is in sites-enabled but not sites-available 4. The config file does not have a filename ending in . conf (really!!!) 5. The folder containing HTML does not match the path given in the config file (/var/www/mysite) If apache won't start at all 1. Your syntax in the config file is wrong. It should look like this (assuming your site is mysite.co.za) : <VirtualHost *:80> DocumentRoot /var/www/mysite Options All Indexes ExecCGI ServerName www.mysite.co.za ServerAlias mysite.co.za ErrorDocument 404 /error.html </VirtualHost> <Vi...