Question: Read RFC 5321 for SMTP. What does MTA stand for? Consider the following received spam email (modified from a real spam email). Assuming only the

Read RFC 5321 for SMTP. What does MTA stand for? Consider the following received spam email (modified from a real spam email). Assuming only the originator of this spam email is malacious and all other hosts are honest, identify the malacious host that has generated this spam email.
From - Fri Nov 07 13:41:30 2008
Return-Path:
Received: from barmaiI.cs.umass.edu
(barmaiI.cs.umass.edu [128.119.240.3) by cs.umass.edu
(8.13.1/8.12.6) for ; Fri, 7 Nov 2008 13:27:10 -0500
Received: from asusus-4b96 (localhost [127.0.0.1]) by
barmail.cs.umass.edu (Spam Firewall) for
i Fri, 7 Nov 2008 13:27:07 -0500
(EST)
Received: from asusus-4b96 ([58.88.21.177]) by
barmail.cs.umass.edu for i Fri,
07 Nov 2008 13:27:07 -0500 (EST)
Received: from [58.88.21.177] by
inbnd55.exchangeddd.comi Sat, 8 Nov 2008 01:27:07 +0700
From: "Jonny"
To:
Subject: How to secure your savings

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