Sure -- while reading the approved mail, display all headers and scan for

Approved-By:

Here's an example of the one you just sent and approved by a moderator ...

Return-Path: <owner-lstsrv-l*Pete-Weiss**PSU*[log in to unmask]>
Received: from tr10n05.aset.psu.edu (tr10g05.aset.psu.edu [146.186.16.57])
    by tr26n17.aset.psu.edu (8.14.1/8.14.1) with ESMTP id t6DGhJJA18022858
    for <[log in to unmask]>; Mon, 13 Jul 2015 12:43:19 -0400
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    by camino.dc.lsoft.com (envelope-from <owner-lstsrv-l*Pete-Weiss**PSU*[log in to unmask]>)
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          289491170 for [log in to unmask]; Mon, 13 Jul 2015
          12:43:13 -0400
Approved-By: [log in to unmask]
Received: from sour.ops.eusc.inter.net (sour.ops.eusc.inter.net
          [84.23.254.154]) by RHONE.EASE.LSOFT.COM (SMTPL release 1.1c)
          (envelope-from <[log in to unmask]>) for [log in to unmask]
          with TCP; Mon, 13 Jul 2015 10:57:36 -0400
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          for [log in to unmask]; Mon, 13 Jul 2015 16:57:35 +0200
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.2.3-0ubuntu6
Content-Transfer-Encoding: 7bit
Mime-Version: 1.0
X-SA-Exim-Connect-IP: 85.214.149.177
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                   false
Message-ID:  <1436799454.3911.2.camel@localhost>
Date:         Mon, 13 Jul 2015 16:57:34 +0200
Reply-To:     "LISTSERV Site Administrators' Forum"
              <[log in to unmask]>
Sender:       "LISTSERV Site Administrators' Forum" <[log in to unmask]>
From:         Andrew Kelly <[log in to unmask]>
Subject: moderator activity reports
To:           [log in to unmask]
Precedence: list
List-Help: <http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?LIST=LSTSRV-L>,
           <mailto:[log in to unmask]>
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List-Owner: <mailto:[log in to unmask]>
List-Archive: <http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?LIST=LSTSRV-L>
X-Greylist: Default is to whitelist mail, not delayed by milter-greylist-4.4.3 (tr10n05.aset.psu.edu
[146.186.16.57]); Mon, 13 Jul 2015 12:43:14 -0400 (EDT)
X-PSU-Spam-Hits: -4.91
X-PSU-Spam-Flag: NO
X-Virus-Scanned: amavisd-new at psu.edu

Hi everybody,

...

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