Hi Dennis, that's the problem, the scammers are forging the documents, be they bank, postal or certified checks or money orders. Or as I learned during my year in B.C., "cheques".
They look perfect, imprinted and all, but they're bogus like counterfeit money and fool quite a few people, we're all conditioned to acept money orders without question but you can't any more.

Best,

-Bill