[dsraven]

if the fluid is, in fact, coming from around the threads then I would remove the bleeders one at a time and take a look at the tapered seat area on the end of the screw. it should have a nice uniform taper on the end with no grooves or nicks etc. if they are all good then next check the seat area in the bleeder screw hole on the calipers and wheel cylinders. that is a bit more difficult but can be done easier with a small syringe to suck a bit of fluid out of the hole. you gotta be fast here because the system will automatically gravity bleed so more fluid is going to be coming as soon as you suck a bit out. new bleeder screws are cheap so maybe just replace the screws first and see what happens.
some guys will put teflon tape everything simply because they think it helps seal and they may not know any better. like said earlier, bleeders screws seal on the taper and brake lines are classified as an inverted flare fitting so the seal comes from the tapered flare, not the threads. I have heard of a few guys that wrap the threads on brake fittings because it makes them easier to tighten up and get off after a few years, stops rust is the thought.
start by cleaning the area well with brake clean and compressed air (safety glasses) then include a couple of pics of the leak if it is still there. you could try a small piece of clear tubing attached to the bleeder port of the screw, then if it leaks from the bleeder portion it will show up in the hose. if it leaks from the threads it will be apparent and the hose will be dry on the inside.