I have also received spam from admin@vtr1000.org.
The phpBB version which is used for the Forum is probably compromised, you really should update to 2.0.13 or 2.0.14 as quick as possible. See http://www.phpbb.com
This is the full header from the spam mail (if you want to investigate further). Note that I have substituted part of my mail addess with "MyDomain" to obscure my address just a little bit).:
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Return-Path: <admin@vtr1000.org>
X-Original-To: jens@MyDomain.dk
Delivered-To: jens@MyDomain.dk
Received: from localhost (localhost [127.0.0.1])
by home.MyDomain.dk (Postfix) with ESMTP id B1BF4287DE
for <jens@MyDomain.dk>; Sun, 17 Apr 2005 10:53:04 +0200 (CEST)
Received: from server9.architec.co.uk (server9.architec.co.uk [81.29.75.112])
by home.MyDomain.dk (Postfix) with ESMTP id 99E772823D
for <jens@MyDomain.dk>; Sun, 17 Apr 2005 10:53:02 +0200 (CEST)
Received: (qmail 16531 invoked by uid 48); 17 Apr 2005 08:55:26 -0000
To: admin@vtr1000.org
Subject: help us
Reply-To: admin@vtr1000.org
From: admin@vtr1000.org
Message-ID: <c604d977e959c32d423947066c18ca54@www.abercon.co.uk>
MIME-Version: 1.0
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 8bit
Date: Sun, 17 Apr 2005 09:55:26 +0100
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: PHP
X-MimeOLE: Produced By phpBB2
X-AntiAbuse: Board servername - http://www.abercon.co.uk
X-AntiAbuse: User_id - 2
X-AntiAbuse: Username - administrator
X-AntiAbuse: User IP - 80.142.127.71
X-Virus-Scanned: by AMaViS 0.3.12pre8
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Regards
/Jens