There is an excellent resource in abuse.net http://www.abuse.net I believe it is run by the acting moderator of comp.dcom.telecom A brief excerpt from its FAQ HOW DOES ABUSE.NET WORK ? Once you've registered, when you send a message to an address at abuse.net, the system here automatically re-mails your message to the best reporting address(es) we know for the domain you want to send to. If, say, you wanted to send mail to example.com, the address would be example.com(a)abuse.net. It's up to you to figure out what the appropriate domain is. See http://spam.abuse.net/others/sites.html for some links to mail analysis advice. For many domains the contact address is postmaster@<domain>, for some it's abuse@<domain>, for some it's something else. Some particularly unpleasant domains ignore all their mail; when we're aware of that we use the address for their next-level-up provider. * Send a copy of the entire abusive message, including all of the header lines, particularly the "Received:" lines. (Many mail programs including Pine and Eudora don't show or send all the headers unless you specifically tell them to.) If the message is very long, you can cut off the message in the middle, so long as you're sure you're sending all the headers. * Be polite and to the point. * Don't make any threats unless you intend to carry them out. In particular, don't threaten people under the junk fax law (47 USC 227) unless you actually plan to take them to small claims court; even responsible ISPs are really tired of this vacuous threat. On Fri, 11 Feb 2000, Aaron Christopher Finney wrote: