RE: OT: Spam Problems
> Date: Mon, 9 Jul 2012 13:13:26 +0200
> From: htd@xxxxxxxxxx
> To: users@xxxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: OT: Spam Problems
> On 09.07.2012, Errol Mangwiro wrote:
> > Recently I started receiving bounces from mail purporting to having
> > been sent from addresses in my domain. But the addresses don't
> > exist. So I thought that someone was faking the sender header and
> > sending spam.
> Please post the _full_ header of such a mail.
> > I added SPF and domain-key records to try to combat this.
> > However, either hotmail and yahoo don't check these or they
> > ignore them because I'm still getting spammed.
> It's trivial to fake any From: header, and there's nothing you can do
> about that, unfortunately.
> > Does anyone know of a way I can tighten fake sender policies & prevent this from occuring again?
> You can't prevent people from faking the From: header. Any spamfilter
> or network admin who tags email as spam according to From: is a moron.
> The correct way is to see if all these spam-emails originate from the
> same server, and send the admin an epost. To do this, a look at the
> complete and original header of one of those spammails is neccessary.
Delivered-To: mickeybbb0f1@xxxxxxxxxxxxxxx Received: by 10.216.172.6 with SMTP id s6csp346134wel; Tue, 10 Jul 2012 08:29:33 -0700 (PDT) Received: by 10.68.217.3 with SMTP id ou3mr70617584pbc.117.1341934172516; Tue, 10 Jul 2012 08:29:32 -0700 (PDT) Return-Path: <> Received: from exprod7ob105.obsmtp.com (exprod7ob105.obsmtp.com. [188.8.131.52]) by mx.google.com with SMTP id vo8si60767330pbc.103.2012.07.10.08.29.31; Tue, 10 Jul 2012 08:29:32 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of exprod7ob105.obsmtp.com designates 184.108.40.206 as permitted sender) client-ip=220.127.116.11; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of exprod7ob105.obsmtp.com designates 18.104.22.168 as permitted sender) smtp.mail= Received: from outlook.justanswer.com ([22.214.171.124]) (using TLSv1) by exprod7ob105.postini.com ([126.96.36.199]) with SMTP; Tue, 10 Jul 2012 08:29:32 PDT MIME-Version: 1.0 From: <postmaster@xxxxxxxxx> To: <MickeyBBB0F1@xxxxxxxxxxxxxxx> Date: Tue, 10 Jul 2012 08:29:30 -0700 Content-Type: multipart/report; report-type=delivery-status; boundary="0046cf39-1fa2-469a-b377-33f7f68815d5" Content-Language: en-US Message-ID: <f82d25ff-3475-4c07-8ac4-cf69c0ab6691@xxxxxxxxx> In-Reply-To: <20120710172926.79651D908E4FB40D87935@MARIA-DATOR> References: <20120710172926.79651D908E4FB40D87935@MARIA-DATOR> Subject: Undeliverable: Newsletter --0046cf39-1fa2-469a-b377-33f7f68815d5 Content-Type: multipart/alternative; differences=Content-Type; boundary="581be4fc-9dcb-4be1-ab33-2fa78e4b74ea" --581be4fc-9dcb-4be1-ab33-2fa78e4b74ea Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Delivery has failed to these recipients or groups: anna (anna@xxxxxxxxxxxxxx)<mailto:anna@xxxxxxxxxxxxxx> The e-mail address you entered couldn't be found. Please check the recipien= t's e-mail address and try to resend the message. If the problem continues,= please contact your helpdesk>
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