[testvox]

Its worse than that, the only part of a DMCA notice that is made under penalty of perjury is that the filer is authorized to represent the holder of the copyright being claimed (so really it just protects big owners of copyright from people impersonating them). The only real recourse for false claims is to sue for damages, and even then the bar is high. You need to prove damages and that the claim was made in bad faith, not merely negligently.