Exch 2003 - Spoofing = Kan ikke leveres

Her er lige et eksemple:

Microsoft Mail Internet Headers Version 2.0
Received: from mail pickup service by server01.MIT-FIRMA-NAVN.local with Microsoft SMTPSVC;
    Sun, 8 Mar 2009 05:10:58 +0100
x-endofinjectedxheaders:5315
Thread-Topic: Undeliverable: Invoice from itunes.com
thread-index: Acmfo+Is0glCs/EtRYqjFfn4j/XJpw==
Return-Path:
From: "System Administrator" <administrator@MIT-FIRMA-NAVN.local>
Sender: "System Administrator" <postmaster@MIT-FIRMA-NAVN.local>
To: <post@MIT-DOMAIN.dk>
Subject: Undeliverable: Invoice from itunes.com
MIME-Version: 1.0
Content-Type: multipart/report;
    report-type=delivery-status;
    boundary="----=_NextPart_000_0406_01C99FAC.43F794A0"
Content-Class: urn:content-classes:dsn
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4325
Message-ID: <SERVER01kbDwaQCRgFn000000f7@server01.MIT-FIRMA-NAVN.local>
X-OriginalArrivalTime: 08 Mar 2009 04:10:58.0276 (UTC) FILETIME=[E2595240:01C99FA3]
Date: 8 Mar 2009 05:10:58 +0100

------=_NextPart_000_0406_01C99FAC.43F794A0
Content-Type: text/plain;
    charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

------=_NextPart_000_0406_01C99FAC.43F794A0
Content-Type: message/delivery-status
Content-Transfer-Encoding: 7bit

------=_NextPart_000_0406_01C99FAC.43F794A0
Content-Type: message/rfc822
Content-Transfer-Encoding: 7bit

Thread-Topic: Invoice from itunes.com
Received: from c-76-103-112-252.hsd1.ca.comcast.net ([76.103.112.252]) by server01.MIT-FIRMA-NAVN.local with Microsoft SMTPSVC(6.0.3790.3959); Sun, 8 Mar 2009 05:10:55 +0100
To: <post@MIT-DOMAIN.dk>
Subject: Invoice from itunes.com
From: <post@MIT-DOMAIN.dk>
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
Importance: High
Content-Type: text/html;
    charset="iso-8859-1"
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4325
Return-Path: <post@MIT-DOMAIN.dk>
Message-ID: <SERVER01i71mrvoGdKO000000f6@server01.MIT-FIRMA-NAVN.local>
X-OriginalArrivalTime: 08 Mar 2009 04:10:56.0166 (UTC) FILETIME=[E1175C60:01C99FA3]
Date: 8 Mar 2009 05:10:56 +0100


------=_NextPart_000_0406_01C99FAC.43F794A0--

Du kan lave en spf record, så andre servere har en bedre chance for at vurdere, om en mail fra dit domæne er spam eller ej.

Derudover kan du ikke rigtig gøre noget.

Tja, men hvordan kan jeg se om de i virkeligheden "måske" er sendt fra min Exchange ?

Lukke tid...