Why does the 301 redirect, gluing a domain in Imagecms not work?

Question

CMS

There is a site on which Imagecms 4.6 is installed, in .htaccess I write a 301 redirect from tolstikovbros.kz to www.tolstikovbros.kz, but for some reason it does not work, I get the error "ERR_TOO_MANY_REDIRECTS".
Now I'm thinking, maybe the Imagecms engine is not working correctly, or am I writing the RewriteRule incorrectly?

RewriteCond %{HTTP_HOST} ^tolstikovbros.kz [NC] 
RewriteRule ^(.*)$ http://www.tolstikovbros.kz/$1 [L,R=301]

Answer 1

Because www.tolstikovbros.kz fits under ^tolstikovbros.kz
In general, they usually do it with www. to without www redirect..
Do this ^tolstikovbros\.kz

Answer 2

from www to without

RewriteEngine on
RewriteCond %{HTTP_HOST} ^www.tolstikovbros.kz
RewriteRule ^(.*)$ http://tolstikovbros.kz/$1 [R=301,L]

with without on www

RewriteEngine On
RewriteCond %{HTTP_HOST} ^tolstikovbros.kz
RewriteRule (.*) http://www.tolstikovbros.kz/$1 [R=301,L]