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How do I get the mail headers from an email message?

When trying to troubleshoot a problem with mail, it's often helpful to get the full mail headers for a message.
These mail headers are usually not shown with a mail client unless you explicitly ask for them.
The following is an example Mail header:
Return-Path: someuser@isc.upenn.edu
Received: from mailtransit.mailserver.upenn.edu (LHLO mailtransit.mailserver.upenn.edu)
 (172.16.254.111) by upennmailbox.mailserver.upenn.edu with LMTP; Wed, 29 May 2013
 11:33:25 -0400 (EDT)
Received: from mailtransfer.mailserver.upenn.edu (mailtransfer.mailserver.upenn.edu [172.16.254.11])
	by mailtransit.mailserver.upenn.edu (Postfix) with ESMTP id 3A01F628698;
	Wed, 29 May 2013 11:33:25 -0400 (EDT)
Received: from zero6.obewon1.mailservice.com (zero6.obewon1.mailservice.com [172.16.254.55])
	by mailtransfer.mailserver.upenn.edu (Postfix) with ESMTP id D26BA10B35
	for ; Wed, 29 May 2013 11:33:24 -0400 (EDT)
Received: from [228.28.523.136:56154] by frodo-8.bilbo-2.mailservice.com id 66/D2-05021-4CF16A15; Wed, 29 May 2013 15:33:24 +0000
X-Env-Sender: someuser@isc.upenn.edu
X-Msg-Ref: gandalf.was-here-2.mailservice.com!1369841602!14041934!1
X-Originating-IP: [128.91.2.99]
X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: 
  VHJ1c3RlZCBJUDogMTI4LjkxLjIuOTkgPT4gOTgwMg==\n
X-StarScan-Received:
X-StarScan-Version: 6.9.6; banners=-,-,-
X-VirusChecked: Checked
Received: (qmail 14849 invoked from network); 29 May 2013 15:33:23 -0000
Received: from simple.some.net.upenn.edu (HELO simple.some.net.upenn.edu) (128.99.6.91)
  by gandalf.was-here-2.mailservice.com with DHE-RSA-AES256-SHA encrypted SMTP; 29 May 2013 15:33:23 -0000
Received: from shube1.mailserver.upenn.edu (shube1.mailserver.upenn.edu [128.98.234.22])
	by simple.some.net.upenn.edu (Postfix) with ESMTP id 723E01941F
	for ; Wed, 29 May 2013 11:33:22 -0400 (EDT)
Received: from shube1.mailserver.upenn.edu (shube1.mailserver.upenn.edu [128.98.234.22])
	by shube1.mailserver.upenn.edu (Postfix) with ESMTP id 672323A005C
	for ; Wed, 29 May 2013 11:33:22 -0400 (EDT)
Date: Wed, 29 May 2013 11:33:22 -0400 (EDT)
From: Some User 
To: email-help@isc.upenn.edu
Message-ID: <1435730627.4585.1369841602332.JavaMail.root@mailserver.upenn.edu>
In-Reply-To: <19112470.4583.1369841529954.JavaMail.root@mailserver.upenn.edu>
Subject: Username "pennuser"
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-Originating-IP: [128.99.254.122]
X-Mailer: Zimbra 7.2.3_GA_2872 (ZimbraWebClient - FF3.0 (Win)/7.2.3_GA_2872)

Below are instructions for getting the full mail headers from various email clients.

Zimbra Webmail Client

  • Select the message for which you need the full mail headers.
  • Right click the message. You will see a pop-up window with a list of options for that message.
  • Select "Show Original".
  • A separate browser window will be opened that has the full text of the mail headers.
  • You can select, copy and paste this text.

Zimbra Thunderbird Client

  • Right-Click on the email message  for which you need full text of the mail headers.
  • Select View Source on the popup menu

  • A separate browser window will be opened that has the full text of the mail headers.
  • You can select, copy and paste this text.

Exchange Outlook 2011 for MAC

  • Select the Message. Do not open the message.
  • Right click (or ctrl + click) on the message in the message list and select View Source.


  • A separate browser window will be opened that has the full text of the mail headers.
  • You can select, copy and paste this text.

Exchange Outlook 2010

  • Double-click on the email message for which you want header information and select the File tab.
  • Click on Properties in the box on the bottom right. A new window, Internet Headers, will open.

  • Right-click in the Internet Headers window. and pull down to Select All
  • You can copy and paste the text from this window.

Exchange Web Access (OWA)

  • Log into OWA
  • Double click the email message, so the message opens in a new window
  • With the message open in a new window, click the letter/envelope icon to open the Message Details.

  • Header information will appear in a new window, under Internet Mail Headers.  
  • You can select, copy and paste the text from this window.

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