Hard to tell from the pics, are you referencing the thing jutting out from casing (Left-side of pic)? To me it looks like someone shoved a rag in there to hide a leak...hopefully not.
If all is operating properly - let the transmission shop take a look & assess. Sure it's not horrible, but let us know what you/they find.
If all is operating properly - let the transmission shop take a look & assess. Sure it's not horrible, but let us know what you/they find.