I have an ubuntu apache serveur, with many websites. all my website have the same bug ( so it's look like a misconfiguration) http://www.2sigma.fr <- it's work fine ( we see "en travaux") http://2sigma.fr <- dont work, i got 310 error (cyclic redirection!) here my .htaccess Options +FollowSymlinks RewriteEngine on RewriteCond %{HTTP_HOST} ^2sigma\.fr$ RewriteRule ^(.*) http://www.2sigma.fr/$1 [R=301,L] here my confguration <VirtualHost *:80> <IfModule mpm_itk_module> AssignUserId sigma www-data </IfModule> ServerAdmin [email protected] ServerName 2sigma.fr ServerAlias www.2sigma.fr DocumentRoot /home/sigma/www <Directory /> Options FollowSymLinks AllowOverride All </Directory> <Directory /home/sigma/www> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> ErrorLog /var/log/apache2/error_sigma # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access_sigma combined ServerSignature Off If i use this .htaccess it's work fine : Options +FollowSymlinks RewriteEngine on RewriteCond %{HTTP_HOST} ^2sigma\.fr$ RewriteRule ^(.*) http://www.google.fr/$1 [R=301,L] I think that it is a apache configuration probleme... but i dont kno how to solve it. Thanks for your help