<Virtualhost *>
ServerName
www.domain.at
ServerAlias domain.at
documentroot /data/www/webmail
php_admin_value safe_mode on
php_admin_value include_path /data/www
php_admin_value open_basedir /data/www/webmail
</Virtualhost>
php.ini
php_admin_value open_basedir "/dir1:/dir2"
Sloter