cp dwarvenmail.com.conf.bootstrap \
  /etc/nginx/sites-available/dwarvenmail.com.conf

cd /etc/nginx/sites-enabled
ln -s /etc/nginx/sites-available/dwarvenmail.com.conf 04dwarvenmail.com.conf
cd -

nginx -t
systemctl restart nginx

certbot --nginx -d dwarvenmail.com,www.dwarvenmail.com \
  --agree-tos -m "hostmaster@dwarvenmail.com" --no-eff-email \
  --deploy-hook "systemctl reload nginx"

cp dwarvenmail.com.conf /etc/nginx/sites-available/dwarvenmail.com.conf

nginx -t
systemctl restart nginx