Calling all techno-geeks! HELP!

[Recon by Fire]

I am trying to track an email account to determine who it belongs to. IT investigations is not my fortee! Any help for an amateur IT guy? It is a yahoo account. A client of mine received a mysterious email from this account, the emial contained a specific name on a current investigation, so it is not just a random spam.

Thanks to anyone who can offer some help or advice!

[Yabb0]

whats the email account.... ill give you all the information on that account.

[wageslave]

All the best info comes from the headers of the message. And by "headers" I don't mean just the From, To, and Subject lines. I'm referring mainly to the real origin of the message (the first couple of "received from" headers. Just seeing a Yahoo address in the From field doen't mean it came from Yahoo.

Specifically, these headers:

Received: from wbar25.tmp1-4.28.207.175.tmp1.dsl-verizon.net (wbar25.tmp1-4.28.207.175.tmp1.dsl-verizon.net [4.28.207.175]) by wish.halo5.net (Postfix) with SMTP id 438CA472A8; Fri, 4 Feb 2005 01:26:33 -0600 (CST)
Received: from ttgh.com (EHLO asmtp-a.pas.sa.earthlink.net) dally by dram5738.253.171.4.69 (2.17.5/7.43.8) id g74YfX1206 with SMTP; Fri, 04 Feb 2005 11:22:15 +0400

Or something similar.

EDIT: My apologies for bringing back a month-old thread. Feel free to just ignore me.