Subdomain rewriting problem

[keny]

Hi,

i am trying to rewrite subdomain
http://anysubdomain.mydomain.com to http://www.mydoamin.com/web/index.php?site=anysubdomain

I have create a wildcard subdomain correctly

I have create vhost.conf whit this :

<IfModule mod_rewrite.c>
# Turn on the rewrite engine
RewriteEngine on
# Make sure all input is lowercase for comparison
RewriteMap lowercase int:tolower

# All sub names to be matched
ServerAlias *.mydomain.com

# Not index.php requested
RewriteCond %{REQUEST_URI} !^/index.php

# Not www. requested
RewriteCond %{HTTP_HOST} !^www.mydomain.com$

# subname present in request
RewriteCond %{HTTP_HOST} ^(.+).mydomain.com

# Do the PROXY redirect to preserve the browser URL
RewriteRule .* http://www.mydomain.com/web/index.php?site=%1 [L,P]
</IfModule>

Then
/usr/local/psa/admin/bin/websrvmng -u --vhost-name=mydomain.com
and restart apache

when i try it i get error 403
You don't have permission to access / on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request

Yes this address work : http://www.mydomain.com/web/index.php?site=anysite

Anyone ?

Thanks you very much !!!!