Don't know if it's just me, but I didn't find a way to bind keys that are responsible for closing the messagebox. I am talking specifically about the messagebox you see when someone delivers a note, or after you rest up. I can only close it with Esc, Enter or RMB click, as far as I am aware, and no way to re-bind it.
I would love it to be bound to the same key that activates the center object, I think it makes the most sense, but I also wouldn't mind it being a separate key in Advanced controls. Still, I might just be missing something, but I would love to re-bind this action specifically, if possible