Does the monit programma works well if you see it just trough the normal pages?
$full_site to your normal addres so you get.
$full_site = www.yoursite.ext;
or if you use it as a other virtual host with a subdomain you must set
$full_site = yoursub.yoursite.ext;
if this still not works then i must rewrite the whole tut and i can do it tommorow