And as usual the whole lynch pin of the argument is based on deception.
The NNTP-Posting-Host is not the client IP address. If it was, it wouldnt be called a HOST, it would be called client or simply origination IP or something. I know, I know. It will fool the non-tecnical people. http://www.cynthiaarmistead.com/headers/usenetheaders.shtml
"If there's a numeric address, use a tool like Sam Spade's whois to figure out what it translates to and who owns that IP address. In this case, both the numeric and English addresses given refer to the same machine. We can tell that it's a machine OWNED BY PSINet, Inc. and that it's probably at their Atlanta point-of-presence (POP)."
You are especially good at "strategic" messaging (which is code for embarass the opposition). See, I learned a new euphemism.