Securing a wooden exterior door frame

[Stonker]

Having draught-proofed my front door, I now find that my wife's ill-tempered vigour when closing the now snug-fitting door(!) has loosened the entire timber frame from its seating.

Before knocking it back into place, I could get a finger between outer wall and inner surface of the frame.

How can I best secure the door frame again?

 

[masona]

Fisher screw or frame fixing screw then use sand/cement for making goods.