How to show Full Message Headers of an email?

Besides the basic information like the addresses of the sender (From:), the recipient (To:), the subject (Subject:) and the date (Date:), the Full Mail Headers is the complete set of Email headers added by the sender's email software and related Email Servers during the email delivery process. It contains very useful information of the email message delivery and routing, including IP addresses involved, time sent and the sources of the email.

Following are the Full Message Headers of a sample message:

Received: from SIXPR04MB014.apcprd04.prod.outlook.com (10.242.60.14) by
 SIXPR04MB013.apcprd04.prod.outlook.com (10.242.60.13) with Microsoft SMTP
 Server (TLS) id 15.0.731.12 via Mailbox Transport; Mon, 29 Jul 2013 07:05:57 +0000
Received: from SIXPR04MB046.apcprd04.prod.outlook.com (10.242.61.148) by
 SIXPR04MB014.apcprd04.prod.outlook.com (10.242.60.14) with Microsoft SMTP
 Server (TLS) id 15.0.731.12; Mon, 29 Jul 2013 07:05:56 +0000
Received: from HKXPRD0410HT005.apcprd04.prod.outlook.com (10.255.7.168) by
 SIXPR04MB046.apcprd04.prod.outlook.com (10.242.61.148) with Microsoft SMTP
 Server (TLS) id 15.0.731.16; Mon, 29 Jul 2013 07:05:50 +0000
Received: from HKXPRD0410HT002.apcprd04.prod.outlook.com (10.255.7.165) by
 HKXPRD0410HT005.apcprd04.prod.outlook.com (10.255.7.168) with Microsoft SMTP
 Server (TLS) id 14.16.341.1; Mon, 29 Jul 2013 07:05:49 +0000
Received: from mail174-co9-R.bigfish.com (207.46.163.19) by
 HKXPRD0410HT002.apcprd04.prod.outlook.com (10.255.7.165) with Microsoft SMTP
 Server (TLS) id 14.16.341.1; Mon, 29 Jul 2013 07:05:48 +0000
Received: from mail174-co9 (localhost [127.0.0.1]) by
 mail174-co9-R.bigfish.com (Postfix) with ESMTP id 06C75B2008A; Mon, 29 Jul
 2013 07:05:47 +0000 (UTC)
X-Forefront-Ant spam-Report: CIP:144.214.4.70;KIP:144.214.4.70;UIP:(null);
 (null);H:smtp01.cityu.edu.hk;R:internal;EFV:INTSFV:SKN;SFS:;DIR:INB;SFP:;SCL:
 -1;SRVR:SIXPR04MB046;H:HKXPRD0410HT005.apcprd04.prod.outlook.com;
 CLIP:10.236.132.250;LANG:en;;SKIP:1;
X-Safelisted-IP: 144.214.4.70
X-FOPE-CONNECTOR: Id$35512%Dn$MY.CITYU.EDU.HK%PF$0%SF$0%RO$0%
X-FFO-Routing-Override: my.cityu.edu.hk%inboundsmtpprofile-309515.customer.frontbridge.com;
Received: from mail174-co9 (localhost.localdomain [127.0.0.1]) by mail174-co9
 (MessageSwitch) id 1375081545209142_12386; Mon, 29 Jul 2013 07:05:45 +0000 (UTC)
Received: from CO9EHSMHS026.bigfish.com (unknown [10.236.132.250]) by
 mail174-co9.bigfish.com (Postfix) with ESMTP id E1245100047; Mon, 29 Jul 2013
 07:05:44 +0000 (UTC)
Received: from smtp01.cityu.edu.hk (144.214.4.70) by CO9EHSMHS026.bigfish.com
 (10.236.130.36) with Microsoft SMTP Server id 14.16.227.3; Mon, 29 Jul 2013
 07:05:42 +0000
Received: from smtp01.cityu.edu.hk (localhost [127.0.0.1]) by localhost
 (Postfix) with SMTP id DC23B3C24C; Mon, 29 Jul 2013 15:05:41 +0800 (HKT)
Received: from finland01.sys0.cityu.edu.hk (finland01.sys0.cityu.edu.hk
 [144.214.6.78]) by smtp01.cityu.edu.hk (Postfix) with ESMTP id 533633C247;
 Mon, 29 Jul 2013 15:05:40 +0800 (HKT)
Received: from finland01.sys0.cityu.edu.hk (localhost [127.0.0.1]) by
 finland01.sys0.cityu.edu.hk (8.14.5+Sun/8.14.4) with ESMTP id r6T75XOq022808;
 Mon, 29 Jul 2013 15:05:40 +0800 (HKT)
Received: (from root@localhost) by finland01.sys0.cityu.edu.hk
 (8.14.5+Sun/8.14.5/Submit) id r6T75W5t022807; Mon, 29 Jul 2013 15:05:32 +0800 (HKT)
Date: Mon, 29 Jul 2013 15:05:32 +0800
Message-ID: <25453_1375081541_51F61444_25453_2970_8_201307290705.r6T75W5t022807@finland01.sys0.cityu.edu.hk>
From: Computing Services Centre <csc@cityu.edu.hk>
Subject: Service Upgrade to Office 365 (O365) Email Service on 2 Aug 2013
To: All Office 365 Users <hidden-list@cityu.edu.hk>
Errors-to: list-admin@cityu.edu.hk
MIME-Version: 1.0
Content-Type: text/html
X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2013.7.29.65419
Return-Path: list-admin@cityu.edu.hk
X-MS-Exchange-Organization-MessageDirectionality: Incoming
X-MS-Exchange-Organization-SCL: -1
X-MS-Exchange-Organization-AVStamp-Mailbox: MSFTFF;1;0;0 0 0
X-MS-Exchange-Organization-Network-Message-Id: 3345129f-1e42-4c24-cb4d-08d05a4132d1
X-MS-Exchange-Organization-AVStamp-Service: 1.0
X-MS-Exchange-Organization-AuthSource: HKXPRD0410HT002.apcprd04.prod.outlook.com
X-MS-Exchange-Organization-AuthAs: Anonymous

In Office 365 Outlook Web App (OWA) you can show the full message header of an email with the following procedure:

  1. Login your O365 account with Office 365 OWA.
  2. Select the email that you want to show its full message header. Click More actions icon.
  3. Select view message details.

  4. Right click mouse and click Select all.

  5. Select Copy to copy the highlighted content, then paste it to any editor (e.g. MS Word, Notepad, WordPad, etc).

 

Return to FAQs on CityU Office 365

csc@cityu.edu.hk