William,

Based on your description(discharging water from under the freezer door)
it's not clear to me if you mean water on the floor under the freezer door or water is running out the bottom of the freezer door.

If the water is running out the bottom of the freezer door :

I would have to think, you have a clogged or frozen defrost drain pan.

Or a leak from the ice maker fill tube.

You will need to remove the back wall of the freezer compartment to access and repair both situations.

If you mean water on the floor under the freezer door :

You will need to check the water supply tube to the dispenser, from the freezer door hinge back to the dispenser fill valve for loose connections and drips(you'll need to remove the vented kick plate from the bottom of the refrigerator).

It's probably time to clean the condenser coil in the back of the fridge, inside the compressor compartment.

Good Luck,

:) :) :)