The Perfect Server - Ubuntu 12.04 LTS (Apache2, BIND, Dovecot, ISPConfig 3)

[fakemail123]

I do everything what was in this tutorial http://www.howtoforge.com/perfect-se...ot-ispconfig-3 ,not with squirrelmail but roundcube http://www.howtoforge.com/how-to-ins...debian-squeeze
14.1 Xcache done, 14.2 PHP-FPM done.

http://example.com/webmail works
https://example.com/webmail works
http://example.com/phpmyadmin works
https://example.com/phpmyadmin works
https://example.com:8080 (ISPConfig) works
mailman works
pure-ftpd works

I replace from /var/www/ index.html ,then put joomla installation package.
I have problem with the main site, after http://example.com or https://example.com or http://example.com/INSTALL.php I have blanc site, after http://example.com/installation/ site starts but show: Restricted access (Joomla massage).

What I should to do?? I want that my main site starts in /var/www/ after putting http://example.com and http://192.168.1.1.