Ok this is the situation. RoundCube is in an iframe embedded in my site.
It works fine for FireFox but for IE it says "Your browser does not support cookies"
I believe the only way to solve this is to setup a P3P Compact Privacy Policy.
Has anyone done this??? Does anyone know of another way to embed RC without this error???
Also see this post, I have already kind of asked the question.
http://roundcubeforum.net/forum/index.php?topic=729.msg6120#msg6120
