2010 OWA not automatically logging in

I'm getting HTTP 400 Bad request ERROR using these settings, Exchange 2007 works perfectly. Any idea what this could be in OWA 2010?

 

 

Is working for me now, needed to check "Use POST for URL variables:" on the Web Application. (That is what I had also on OWA 2007 webapp)

 

And what i needed to add (this is the fault of our Exchange config that needs te be fixed) is the domain name. See [DOMAINNAME] and replace it with your domainname.

 

 

destination=https://[OWA_SERVER_URL]/owa&flags=0&forcedownlevel=0&trusted=4&username=[DOMAINNAME]\%username%&password=%password%&isUtf8=1