A little help would be appreciated

I received an email from an anonymous source and want to know who it is from. The properties stuff is as follows;

Return-Path: <marco_dave@hotmail.com>
Received: from aamta2.adelphia.net ([20*.*8.*0*.**5]) by mta*.adelphia.net
(InterMail vM.6.0*.05.04 20*-2***-*2*-*05-2005*025) with ESMTP
id <20080*0**2*05*.KIEK28475.mta*.adelphia.net@aamta2.adelphia.net>
for <faheyjoe@adelphia.net>; Wed, * Jan 2008 07:*0:5* -0500
Received: from elproxy.elsite.com.br ([20*.*8.*0*.**5])
by aamta2.adelphia.net
(InterMail vG.2.00.00.02 20*-2*6*-*08-*0*-200507**) with ESMTP
id <20080*0**2*050.HTCW846.aamta2.adelphia.net@elproxy.elsite.com.br>
for <faheyjoe@adelphia.net>; Wed, * Jan 2008 07:*0:50 -0500
Received: from 20*.*8.*0*.**6 (unknown [5*.*4.**.**0])
by elproxy.elsite.com.br (Postfix) with SMTP id 7**EE44CBD*;
Wed, * Jan 2008 0*:04:4* -0*00 (BRT)
Received: from 2*0.67.24*.62 by 5*.*4.**.**0; Sun, ** Jan 2008 *4:57:2* +0*00
Message-ID: <X[20
Date: Wed, * Jan 2008 0*:04:4* -0*00 (BRT)
From: marco_dave@hotmail.com
To: undisclosed-recipients:;
Message-Id: <20080*0**2*05*.KIEK28475.mta*.adelphia.net@aamta2.adelphia.net>

Anyone here know how to find out who sent it?