I've done a lot of tests now, and as far as I know, the problem isn't the https.
The problem is the forwarding, by this it gets an http-307 - and this is what the solution manager isn't accepting.
So I've no idea how I can solve this problem...
Because in icm/HTTP/redirect I can not make an exception for the /GRMG* pages.
Does anybody has an idea?
Kind regards