Hi msxer,
Personally, I would move the camera and mount it above the door on a proper bracket and maybe move or change the light
. This will enable the camera position to be changed back so as not to cause the leaking as you mentioned. I dont like mounting cameras with a light directly above it. This can lead to light entering the camera by refracting off the dome.
If all else fails, use this cam somewhere else and buy a
DS-2CD2342WD-I 4MP WDR EXIR Turret Network Camera.