A little help would be appreciated

[chiefchief]

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

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Date: Wed, 9 Jan 2008 09:04:49 -0300 (BRT)
From: marco_dave@hotmail.com
To: undisclosed-recipients:;
Message-Id: <20080109121051.KIEK28475.mta1.adelphia.net@aamta2.adelphia.net>

Anyone here know how to find out who sent it?