Below is the html source of a spam message from the quarantine page (email addresses obscured for privacy)
<tr class="box-slide-head clickable" id="u8gUpiMsggxT" mailid="u8gUpiMsggxT">
<td class="checkbox"><input type="checkbox" name="record" value="u8gUpiMsggxT\r\njWy-Taa2GsdU" class="clickable"></td>
<td>gtube</td>
<td><a href="/iredadmin/activities/quarantined/user/XXXXXXXX@gmail.com">XXXXXXXX@gmail.com</a></td>
<td><a href="/iredadmin/activities/quarantined/user/XXXXX@XXXXXXXXXXX.com">XXXXX@XXXXXXXXXXX.com</a></td>
<td>Spam</td>
<td>1 KB</td>
<td>2013-11-03 08:44:10</td>
<td class="vcenter slide-but checkbox"><span>more</span></td>
</tr>
The following query from the database shows that the message is available:
select * from quarantine where mail_id = 'u8gUpiMsggxT'\G;
*************************** 1. row ***************************
partition_tag: 0
mail_id: u8gUpiMsggxT
chunk_ind: 1
mail_text: X-Envelope-From: <XXXXXXX@gmail.com>
X-Envelope-To: <XXXXX@XXXXXXXXXXX.com>
X-Envelope-To-Blocked: <XXXXX@XXXXXXXXXXX.com>
X-Quarantine-ID: <u8gUpiMsggxT>
X-Spam-Flag: YES
X-Spam-Score: 900.726
X-Spam-Level: ****************************************************************
X-Spam-Status: Yes, score=900.726 tag=2 tag2=6.2 kill=6.9
tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1,
FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, GTUBE=1000,
HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, RDNS_NONE=1.274,
SPF_PASS=-0.001, TVD_SPACE_RATIO=0.001, USER_IN_SPF_WHITELIST=-100]
autolearn=no
Authentication-Results: mail1.private-pages.com (amavisd-new); dkim=pass
header.i=@gmail.com
Received: from mail1.private-pages.com ([127.0.0.1])
by localhost (mail1.private-pages.com [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id u8gUpiMsggxT for <XXXXX@XXXXXXXXXXX.com>;
Sun, 3 Nov 2013 09:44:10 +0100 (CET)
Received: from mail-pb0-f46.google.com (unknown [209.85.160.46])
by mail1.private-pages.com (Postfix) with ESMTPS id EE0504316
for <taco@private-pages.com>; Sun, 3 Nov 2013 09:44:09 +0100 (CET)
Received: by mail-pb0-f46.google.com with SMTP id un15so994722pbc.5
for <taco@private-pages.com>; Sun, 03 Nov 2013 01:45:33 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=20120113;
h=mime-version:date:message-id:subject:from:to:content-type;
bh=nViY6AAT1SCA8fKADsH4GZM0N/VGyXUtsx6yGSaqpfM=;
b=YV3yh2B8N8XmutmLNwtghLXoMUKr2uDCO67H33peXO8Zq4BujKBeMExaw0N+5HsmUf
y9lurTva4jNdhW4zfXEbHu5gLHAObQNz0if98qAsAOn5zdyIJUG3OC7v0LMz2kIOcXO9
z5UD032yArtcpqkDy4l54D1FlEfuaftl+FASkePBIhqzPF506oYlq2La2CoXv7FHY0bs
isZWRdzRdei9kFT92vDJuIxFbcyTjuT69V9yOY6W8rqW9uUgOAr/28H/IPqBHMUT5S3G
GUyvblUjuwmRZgR7HxCHVFf6+iVekkX4ALwESguISQ4ogCecTvCVeQ63fo2aUsZAcmhE
C+vg==
MIME-Version: 1.0
X-Received: by 10.66.155.36 with SMTP id vt4mr11814923pab.93.1383466742216;
Sun, 03 Nov 2013 01:19:02 -0700 (PDT)
Received: by 10.68.218.195 with HTTP; Sun, 3 Nov 2013 01:19:02 -0700 (PDT)
Date: Sun, 3 Nov 2013 09:19:02 +0100
Message-ID: <CAEdK=5VSNyixPRDs28q2K7Wp1CMXu6DztZ231aS7nRvCwHQYiQ@mail.gmail.com>
Subject: gtube
From: Taco Scheltema <XXXXX@XXXXXXXXXXX.com>
To: taco@private-pages.com
Content-Type: multipart/alternative; boundary=047d7bacc01aba7ea704ea41732b
--047d7bacc01aba7ea704ea41732b
Content-Type: text/plain; charset=ISO-8859-1
XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X
--047d7bacc01aba7ea704ea41732b
Content-Type: text/html; charset=ISO-8859-1
<div dir="ltr"><pre style="color:rgb(0,0,0)">XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X</pre></div>
--047d7bacc01aba7ea704ea41732b--
1 row in set (0.00 sec)
So it seems the message is saved correctly in the database (as far as I can tell).