[Mimedefang] Negative addresses??

[Ashley M. Kirchner]

    Can someone explain this to me?  It's from a spam message (in fact, 
a lot of them are coming through MD+SA these days) and they all show the 
same thing, negative numbers:

--------
Received: from -1216216520 ([222.60.136.228])
    by serpico.pcraft.com (8.13.0/8.13.0) with SMTP id jB30Mott008917
    for <ashley.kirchner at highpeaks.org>; Fri, 2 Dec 2005 17:22:54 -0700
Received: from goprat.com (-1216301840 [-1213314064])
    by ghfixtures.com (Qmailv1) with ESMTP id 8568A5A816
    for <ashley.kirchner at highpeaks.org>; Fri, 02 Dec 2005 17:22:58 -0800
--------
Received: from 1438002568 ([84.237.176.196])
    by serpico.pcraft.com (8.13.0/8.13.0) with SMTP id jB308JGl008642
    for <ashley.kirchner at highpeaks.org>; Fri, 2 Dec 2005 17:08:24 -0700
Received: from gradykelly.com (1480536112 [1438170304])
    by gn7.admefres.com (Qmailv1) with ESMTP id 3E3BC79B69
    for <ashley.kirchner at highpeaks.org>; Fri, 02 Dec 2005 20:14:54 -0500
--------


    By the way, the message sobject is always the same, 'Software'.

-- 
W | It's not a bug - it's an undocumented feature.
  +--------------------------------------------------------------------
  Ashley M. Kirchner <mailto:ashley at pcraft.com>   .   303.442.6410 x130
  IT Director / SysAdmin / Websmith             .     800.441.3873 x130
  Photo Craft Laboratories, Inc.            .     3550 Arapahoe Ave. #6
  http://www.pcraft.com ..... .  .    .       Boulder, CO 80303, U.S.A.