Не работает редирект с не www домена на www

<?
include_once($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/urlrewrite.php');
if(file_exists($_SERVER['DOCUMENT_ROOT'].'/404.php'))
   include_once($_SERVER['DOCUMENT_ROOT'].'/404.php');
?>

<IfModule mod_rewrite.c>
  Options +FollowSymLinks
  RewriteEngine On

  RewriteCond %{HTTP_HOST} ^([^www].*)$ [NC]
  RewriteRule ^(.*)$ http://www.%1/$1 [L,R=301]
  
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-l
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !/bitrix/urlrewrite.php$
  RewriteRule ^(.*)$ /bitrix/urlrewrite.php [L]
  RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization}]
</IfModule>