How to Track an email

Always with the Header we can check the originator ,below is an example with gmail

Gmail

1.Make a reply to the email you received,onto the downward arrow open "Show Original"

Look at the header portion of it

Received: by 10.216.0.145 with SMTP id 17cs77844web;         Fri, 13 May 2011 15:34:44 -0700 (PDT) Received: by 10.91.207.19 with SMTP id j19mr1857922agq.83.1305326083231;         Fri, 13 May 2011 15:34:43 -0700 (PDT) Return-Path:  Received: from sleet.pas.idealab.com (mail.idealab.com [208.76.2.4])         by mx.google.com with ESMTPS id d20si6039149ano.3.2011.05.13.15.34.41         (version=TLSv1/SSLv3 cipher=OTHER);         Fri, 13 May 2011 15:34:42 -0700 (PDT) Received-SPF: pass (google.com: domain of snap@snap.com designates 208.76.2.4 as permitted sender) client-ip=208.76.2.4; Authentication-Results: mx.google.com; spf=pass (google.com: domain of snap@snap.com designates 208.76.2.4 as permitted sender) smtp.mail=snap@snap.com Received: from mx.idealab.com (mx.idealab.com [208.76.1.220])  by sleet.pas.idealab.com (Postfix) with ESMTP id 1F1B4974027  for <@gmail.com>; Fri, 13 May 2011 15:34:41 -0700 (PDT) Received: from mx.idealab.com (localhost.localdomain [127.0.0.1])  by localhost (Postfix) with SMTP id 0D4F823307C9  for <@gmail.com>; Fri, 13 May 2011 15:34:41 -0700 (PDT) Received: from defaultsnat.la.idealab.com (defaultsnat.la.idealab.com [63.251.211.7])  by mx.idealab.com (Postfix) with ESMTP id F339423307BD  for <@gmail.com>; Fri, 13 May 2011 15:34:40 -0700 (PDT) Received: from defaultsnat.la.idealab.com (defaultsnat.la.idealab.com [127.0.0.1])  by defaultsnat.la.idealab.com (8.13.1/8.13.1) with ESMTP id p4DMYe5I006244  for <@gmail.com>; Fri, 13 May 2011 15:34:40 -0700 Received: (from snap@localhost)  by defaultsnat.la.idealab.com (8.13.1/8.13.1/Submit) id p4DMYeib006243;  Fri, 13 May 2011 15:34:40 -0700

Check for last instance of " Received: from "defaultsnat.la.idealab.com (defaultsnat.la.idealab.com [63.251.211.7]),Use any track IP Address tool to know originator

If you want to do it manually ,use my IP Number/IP Address 

http://subramanyaachar.blogspot.com/2008/08/tracing-ip-address.html