Will Watermarking Stop Backscatter?

[Martin.Hepworth]

Tom

It won't and if you use SPF it will give a spam result as well.

Email 'should' flow the SMTP gateway for that domain.

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Tom G. Christensen
> Sent: 13 May 2008 12:42
> To: MailScanner discussion
> Subject: Re: Will Watermarking Stop Backscatter?
>
> Koopmann, Jan-Peter wrote:
> > To answer Daniel's original question: Yes, watermarking should stop most
> > (if not all) backscatter that is out there. There are commercial
> > programs out there as well (e.g. BarricadeMX) that use a very nifty
> > E-Mail watermarking system as well. Give them a try. It is worth it.
> >
> Stupid question perhaps, but how will it handle this case:
> example.com enables watermarking using MailScanner
> userA has emailaddress userA at example.com
> On his homepc he configures his mail program to use userA at example.com as
> the From adress.
> When he sends mail from home he uses his ISP smarthost and not the
> mailsystem at example.com
> What happens when mail sent this way is bounced somewhere on the way?
>
> -tgc
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