[dfrussell]

1) Spam is almost never traceable, it usually comes from a bunk address

Sorry, you're incorrect: mailing headers which contain hostname/IP address are appended to every piece of email at every hop.

The most you can do here is to use a broken system and insert additional, incorrect information before passing along, but the host involved would have been tagged as broken by most RBLs within minutes.

[N3WBI3]

The most you can do here is to use a broken system and insert additional, incorrect information before passing along

Which is what most spammers do, hence my statement Spam is almost never traceable, it usually comes from a bunk address Stands...