www in domain redirects to control panel (Back office)

[svetaines1]

Hi,

I have problem with my server configuration (or Presta). For example, if I type in browser address:

http://www.crystalluna.com, my site redirects to back office (http://www.crystalluna.com/login.php?redirect=index.php) ?????

if I type http://crystalluna.com, everything works fine and browser load front office.

I turn on friendly URL and also generate htaccess file (but it doesn't matter if SEO on/off, or htaccess file on server or not)

Please, advise me, is it server configuration problem or it is some kind of bug

[svetaines1]

Please, any advise???