Summary of ANTI-spam techniques now available

FWIW, we have an anti-spam list on our site that is used by a
  lot of other ISPs on the net. It contains all of the known
  Cyberpromo domains and IP address blocks, and a ton of other
  stuff. You can get our active list anytime by sending an email
  message to:

  spamlist@us.net

  The list is ready to load into sendmail 8.8.6 using the filter rules
  available at:

  http://www.informatik.uni-kiel.de/~ca/email/chk-newmap.html

  BTW, we will remove any entry in the file as long as the
  spammer agrees to sign and notarize a contract that establishes
  damages at $10,000 per incident if it happens again (and we WILL
  enforce the contract). If they are ISPs, I want to talk personally
  to the owner of the company. We don't put entries into the list
  lightly, and we don't remove them lightly either.

  Dave Stoddard
  US Net Incorporated
  301-572-5926
  dgs@us.net