bacciochi - ok. So it comes from the top rather than the back? Is that correct? Can you slide your phone with the drip tray (dry!) so we can see if it goes over it? Next thing would be to figure out where the leak is coming from.
Edit: I’ve been googling. It looks like, to me, either there’s a leak before the outlet (so missing the drip tray) or the drip tray is not being pushed all the way. I don’t own a MaraX machine so a bit of a wild guess.