Domain routing possibilities in CI?

[eluser]lonka[/eluser]
I finally get to work with this one:

Code:

RewriteEngine on


RewriteCond   %{HTTP_HOST}                 !^www\.example\.com$

RewriteCond   %{HTTP_HOST}                 ![^.]+\.example\.com/settings/(.*)$
RewriteCond   %{REQUEST_URI}               !^/settings[^.]+$
RewriteCond   %{HTTP_HOST}                 [^.]+\.example\.com$
RewriteRule   ^(.+)                        %{HTTP_HOST}$1          [C]
RewriteRule   ([^.]+)\.example\.com(.*) index.php/profile/$1%{REQUEST_URI}


RewriteCond $1 !^(index.php|images|robots.txt|js|css|media|system)
RewriteRule ^(.*)$ index.php/$1 [L]

I have subdomain name.example.com that points to example.com/profile/name/

But on one server this works perfect, and on another with apache I got error

When I try to enter for example nightmare.example.com
Log from mod rewrite:

Code:

[nightmare.example.com/sid#801439e8][rid#803ef030/initial/re#50] (1) [per-dir /var/www/vhosts/example.com/httpdocs/] internal reect with /index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/profile/nightmare/index.php/p

it's stuck on loop, I don't know what to do with this Any help?