The follows is an email header. What address is that of the true originator of the message?

Return-Path: <bgates@microsoft.com>

Received: from smtp.com (fw.emumail.com [215.52.220.122].

by raq-221-181.ev1.net (8.10.2/8.10.2. with ESMTP id h78NIn404807

for <mikeg@thesolutionfirm.com>; Sat, 9 Aug 2003 18:18:50 -0500

Received: (qmail 12685 invoked from network.; 8 Aug 2003 23:25:25 -0000

Received: from ([19.25.19.10].

by smtp.com with SMTP

Received: from unknown (HELO CHRISLAPTOP. (168.150.84.123.

by localhost with SMTP; 8 Aug 2003 23:25:01 -0000

From: "Bill Gates" <bgates@microsoft.com>

To: "mikeg" <mikeg@thesolutionfirm.com>

Subject: We need your help!

Date: Fri, 8 Aug 2003 19:12:28 -0400

Message-ID: <51.32.123.21@CHRISLAPTOP>

MIME-Version: 1.0

Content-Type: multipart/mixed;

boundary="—-=_NextPart_000_0052_01C35DE1.03202950"

X-Priority: 3 (Normal.

X-MSMail-Priority: Normal

X-Mailer: Microsoft Outlook, Build 10.0.2627

X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165

Importance: Normal

A.
19.25.19.10

B.
51.32.123.21

C.
168.150.84.123

D.
215.52.220.122

E.
8.10.2/8.10.2

Explanation:
Spoofing can be easily achieved by manipulating the "from" name field, however, it is much more difficult to hide the true source address. The "received from" IP address 168.150.84.123 is the true source of the