Hi, To run a phpscript i try changing the user of the /var/www , /var/www/mydomain.com and /var/www/sub.mydomain to www-data. I also did chattr -i /var/www and chattr -i /var/www/mydomain. Now when I try to open ispconfig and www.sub.mydomain.com I am getting a 500 permission denied error. But mydomain.com is working fine and giving me index.php. Please help me to correct this error.