From owner-freebsd-questions@FreeBSD.ORG  Wed Aug 27 15:40:31 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5CE00106567D
	for <freebsd-questions@freebsd.org>;
	Wed, 27 Aug 2008 15:40:31 +0000 (UTC)
	(envelope-from steve@ibctech.ca)
Received: from ibctech.ca (v6.ibctech.ca [IPv6:2607:f118::b6])
	by mx1.freebsd.org (Postfix) with SMTP id EC7418FC1D
	for <freebsd-questions@freebsd.org>;
	Wed, 27 Aug 2008 15:40:30 +0000 (UTC)
	(envelope-from steve@ibctech.ca)
Received: (qmail 15778 invoked by uid 89); 27 Aug 2008 15:48:42 -0000
Received: from unknown (HELO ?IPv6:2607:f118::5?)
	(steve@ibctech.ca@2607:f118::5)
	by 2607:f118::b6 with ESMTPA; 27 Aug 2008 15:48:42 -0000
Message-ID: <48B57570.9040707@ibctech.ca>
Date: Wed, 27 Aug 2008 11:40:32 -0400
From: Steve Bertrand <steve@ibctech.ca>
User-Agent: Thunderbird 2.0.0.16 (Windows/20080708)
MIME-Version: 1.0
To: Peter Ulrich Kruppa <ulrich@pukruppa.net>
References: <48B566EA.2000406@pukruppa.net>
In-Reply-To: <48B566EA.2000406@pukruppa.net>
X-Enigmail-Version: 0.95.6
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: FreeBSD-Questions <freebsd-questions@freebsd.org>
Subject: Re: Spam sent to me from my own mail server ?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 27 Aug 2008 15:40:31 -0000

Peter Ulrich Kruppa wrote:
> Hello,
> 
> for some time now I keep receiving spam mails from my own (small) mail 
> server, some of them with faked usernames some of them even with my own 
> (ulrich@...).

How have you identified that they are actually being delivered by your 
server itself?

It is my experience that this is likely not the case, and it is only 
your addresses that are being forged.

The only way to tell for certain is to review the headers of the message.

If you wish, send the email headers (privately if you want), and we can 
identify whether or not it is in fact your server delivering these messages.

Steve