You didn't send ALL the headers, only some of them. You need to send on the full set to make a trace possible. Lee Tien writes:
So I got this message. How would someone identify the sender of this message? I'm writing an article on anonymity, with some discussion of remailers, and want to argue that forging already permits people to raise the costs of tracing significantly, anonymous remailers or no.
Lee
From: freeh@fbi.gov Date: Tue, 24 Oct 95 16:07:08 -0400 Apparently-To: tien@well.sf.ca.us X-UIDL: 814570964.056
How difficult is it to forge headers? How difficult is it to trace a message to the actual sender if the header is forged?
Not very difficult at all (to forge, that is). This is a quick and dirty example that should be somewhat traceable. If you want pointers on how to trace it, post the whole thing, including headers, to cypherpunks.
Louis