Sorry, my mistake. It's another problem. The server is not analyzing my zf1sandbox.sandbox.loc file, that includes the template for Zend Framework vhosts (include /etc/nginx/sites-available/ax-zf-vhost;), but is using my common template (ax-common-vhost). Posted at Nginx Forum: http://forum.nginx.org/read.php?2,235601,235972#msg-235972