CASH MONEY RECORDS SUED FOR SAMPLING

Poindexter claims he reached out to Cash Money for an answer, and was redirected to Bow Wow's attorneys, who then directed him back to Cash Money ... which is why Cash Money's currently in his crosshairs.

Poindexter wants $600,000 in punitive damages, plus interest. Cash Money has yet to respond to the suit. TMZ reached out to the label for comment -- so far, no word back.

It's not the first time Poindexter's sued rappers over his music -- the producer has already filed suit against 50 Cent and Kanye West over similar song-stealing allegations.

Poindexter gettin' everybody & they mama! Like f**k that I'm a get paid off you new ni**as using my ish!

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