http://bugtracker.ispconfig.org/index.php?do=details&task_id=1483

server/conf/vhost.conf.master

@@ -212,7 +212,7 @@
     
     RewriteEngine on
 <tmpl_loop name="redirects">
-    RewriteCond %{HTTP_HOST}   ^<tmpl_var name='rewrite_domain'> [NC]
+    RewriteCond %{HTTP_HOST}   <tmpl_var name='rewrite_domain'>$ [NC]
     RewriteRule   ^/(.*)$ <tmpl_var name='rewrite_target'>$1  <tmpl_var name='rewrite_type'>
 </tmpl_loop>
 </tmpl_if>