FromTheRafters wrote:
 
> So, you're saying that the entire "Received: " header is legitimate
> and zscaler was indeed spamming?

What kind of bone-head are you, exactly?

While some of the Received: lines in a header can be forged, you always
have the very last Received line that is generated by your own server
telling you the IP of the machine that handed it the mail.

Which in this case was 216.218.133.250.

> In your opinion, just how much of an e-mail header can be trusted
> to have no bogus information?

If the machine that connected to your server to deliver mail to your
account is a "legit" server, then you can always trust the next received
line (if there is one) and possibly all other received lines (if there
are any).

> The one where he (you) flat out accused zscaler of spamming.

In the original thread, zscalar was accused of being either a spammer or
being used as a spam-relay:

===========
Subject: Is zscaler known to be a spammer or spam-relay? (because it is)
===========

That accusation was based on examination of the header.

The deduction that the mail originated from (or was relayed by) Zscaler
was correct.  The subject line was correctly phrased.  Your
understanding and interpretation of the situation was (and apparently,
still is) flawed.
--- NewsGate v1.0 gamma 2