Transmission leak - your opinion please!!

[ah-kay]

The 300SDL was left standing for 3 weeks when I was on vacation. I found a wet patch beneath the transmission on my return. It was tranny fluid so I put the car up on stands and cleaned the tranny really good. It always leaks since I had the car and may be I should do something about it.

This is what I find after a few days. The whole tranny pan is dry. I find fluid dripping from front of the tranny where it mates to the engine and fluid dripping from the tranny cross mounting bracket at the back. So I think the front and the back of the tranny is leaking but not the pan gasket, B1, B2 piston covers or shift seal.

Where is it leaking from and how to fix it? Do I need to remove the tranny? Any info is appreciated.