I have an update on my case.

It is possible to sync my contacts and the calendar using dub-m.hotmail.com.

Calender and contacts are working, but as soon as I enable email synchronisation, nothing is synchronised any more.

So somehow the email sync is jamming the whole syncing.

Before my troubles all began, I was about to send some emails with attached photos. They have never arrived, of course, but is it possible that they have to do something with this?

Regards, hosick