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.
Ummm, I am pretty "tecnical" -- I even aced my "networking" class... what I see here is Scipio trying to confuse people. I think he is trying to imply is that this is some central server and not the computer from which the message originated. I am not an expert on this protocol (and neither is he, he just quoted the first thing that comes up on a google search) but:
NNTP is an application-level protocol. As such, "NNTP host" does not indicate that the machine is a server as it is typically understood (your computer acts as a server in many situations; you may get messages from your firewall to this effect.) In fact, this link defines NNTP host as:
This line is added to the header of a posted article by the
server. The contents of the header is either the IP address
or the fully qualified domain name of the client host posting
That sounds better. Anything else you'd like to obfuscate?