How can I tell if an email has been sent directly, or redirected on the way?

How can I tell if an email has been sent directly, or redirected on the way? I've been receiving email from a company, but they claim I'm not on any of their email lists and that it must be getting forwarded by one of their clients.
Asked by: Guest \| Views: 419

Total answers/comments: 2

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bert [Entry]

"Looking at the headers, you should be able to tell every mail server the message touched. For example:

Delivered-To: ericjln@gmail.com
Received: by 10.239.137.15 with SMTP id j15cs159695hbj; Mon, 1 Feb 2010 07:57:34 -0800 (PST)
Received: by 10.224.83.85 with SMTP id e21mr2070265qal.227.1265039847481; Mon, 01 Feb 2010 07:57:27 -0800 (PST)
Return-Path:
Received: from bmsmail5.ieeedotorg (bmsmail5.ieeedotorg [140.98.193.25]) by mx.google.com with ESMTP id 7si11544910qyk.54.2010.02.01.07.57.26; Mon, 01 Feb 2010 07:57:27 -0800 (PST)
Received-SPF: neutral (google.com: 140.98.193.25 is neither permitted nor denied by domain of SEMA-CR--X4OZK@bmsmail2.ieeedotorg)
client-ip=140.98.193.25;
Authentication-Results: mx.google.com; spf=neutral (google.com: 140.98.193.25 is neither permitted nor denied by domain of SEMA-CR-1-IX4OZK@bmsmail2.ieeedotorg) smtp.mail=SEMA-CR-1-IX4OZK@bmsmail2.ieeedotorg
Received: from sbnaom1.ieee-res.ieeedotorg (dct1-lb-191-papp1.ieeedotorg [140.98.191.254]) by bmsmail5.ieeedotorg (8.13.8/8.13.8) with ESMTP id o11FrAg1003597 for ; Mon, 1 Feb 2010 10:57:24 -0500
Date: Mon, 1 Feb 2010 10:57:24 -0500

Follow the Received lines. We can see the message bounced around some internal google servers (10.239.137.15 and 10.224.83.85), that google got the message from bmsmail5.ieeedotorg [140.98.193.25], but that the first smtp server to send the message was dct1-lb-191-papp1.ieeedotorg [140.98.191.254]"

Dhigdq [Entry]

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