Friday, 23 July 2010

How do I stop someone using my domain for Spam emails?

Hi Blog Readers,

Every now and then I seem to have one of those low life Viagra sellers using my domain for spam emailing people.

I have done everything I can think of to try and prevent then from doing this, but they seem to keep doing it.

I just wondered if anyone out there new of a way to stop them?

The headers from one of the bounce backs look like this:
Return-Path: <gavottes@vizioz.com>
Received: from rctp.telecomitalia.it (host49-133-dynamic.52-82-r.retail.telecomitalia.it
[82.52.133.49])
by mx.google.com with SMTP id o8si307731weq.161.2010.07.23.05.33.53;
Fri, 23 Jul 2010 05:33:59 -0700 (PDT)
Received-SPF: fail (google.com: domain of gavottes@vizioz.com does not designate 82.52.133.49 as
permitted sender) client-ip=82.52.133.49;
Authentication-Results: mx.google.com; spf=hardfail (google.com: domain of gavottes@vizioz.com does
not designate 82.52.133.49 as permitted sender) smtp.mail=gavottes@vizioz.com
Message-ID: <3aaefd5365a446c33cfb0bb627waxworks@vizioz.com>
Date: Fri, 23 Jul 2010 14:33:52 +0200
From: Garnett Mckinnie <gavottes@vizioz.com>
MIME-Version: 1.0
To: NAME REMOVE <EMAIL@REMOVED.COM>
Subject: Where we are well established we are


As you can see from the headers, I have setup the SPF record and it is receiving a "hardfail"

We are using Google Apps for our email hosting, so you'd kinda hope that they have got things pretty much secured down, so what I am missing? Or is it always going to be possible for other people to fake sending emails using another domain?

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