Where outside of condo unit, does owner's repair responsibility end?

My dryer is located upstairs on a two story Illinois town home. It vents straight to the roof and has created a condensation/water problem in the attic.  Vent and possible 1' x 1' section may need to be replaced. Our condo association bylaws state that homeowners are responsible for the dryer vent. My question is where does my responsibility end? Machine to the pipe in the ceiling? Attic area or at the roof? Management and board president have been slow to get me an answer.