ispmail-buster-ansible/ansible/roles/ispmail-webmail-apache-roundcube/templates/vhosts/http.j2

<VirtualHost *:80>
  ServerName {{ispmail_fqdn}}
  DocumentRoot /var/www/{{ispmail_fqdn}}

  RewriteEngine On
  RewriteCond %{REQUEST_URI} !\.well-known/acme-challenge
  RewriteRule ^(.*)$ https://%{SERVER_NAME}/ [R=301,L]
</VirtualHost>