RewriteEngine on
 
# check if already rerouted and break
RewriteCond %{HTTP_HOST} ^(.*)\.pepperz\.de$
RewriteRule ^(files|gallery|phpmyadmin) - [L]
#RewriteRule ^%1 - [L]
 
#RewriteCond %{HTTP_HOST} ^%1
#RewriteRule ^([^/]*) - [L]
 
 
# reroute to the subdomain dir if folder exists
RewriteCond %{HTTP_HOST} !^(www\.)?pepperz\.de$
RewriteCond %{HTTP_HOST} ^(.*)\.pepperz\.de$
RewriteCond /var/www/pepperz.de/%1 -d
RewriteRule ^(.*)$ /%1/$1 [L]