Hi,
In order to improve page load time performance I have set up for my site http://www.finanztreff.org a subdomain thru cPanel. The subdomain is called static.finanztreff.org. I managed to move my images over to it, all good so far.
Then I modified the wp-config.php file accordingly by adding the following line:
define("COOKIE_DOMAIN", "www.finanztreff.org");
However when I have been testing my optimisation efforts on e.g. tools.pingdom.com or gtmetrix.com the test results show that static.finanztreff.org is still dropping a cookie. In other words, the tests recommend that the images on static.finanztreff.org better "should be placed on a cookie-free domain", which means that my subdomain indeed is not cookieless.
What am I missing here? Any help is highly appreciated!