Watermarking, checking bounced mail with sender address

ACHA | Cor van den Berghe cbe at acha.nl
Thu Jul 8 10:01:16 IST 2010

Hmm…. now that you mention it… It should be after MailScanner checked it, but it looks like they were skipped.
I'll check the configuration for any rules that might explain why they were not checked


From: maxsec at gmail.com [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Martin Hepworth
Sent: donderdag 8 juli 2010 10:50
To: MailScanner discussion
Subject: Re: Watermarking, checking bounced mail with sender address



are these headers before or after mailscanner should have checked the message? If it's after then I see indication that mailscanner has scanned the message as there are no X-Mailscanner headers.

On 8 July 2010 09:40, ACHA | Cor van den Berghe <cbe at acha.nl> wrote:

Sorry that I didn't make it clear enough.

I was under the impression that MailScanner does 2 checks before it checks the watermark:
1. check if the mail has no sender
2. check if the mail is bounced

If these 2 conditions are true than MailScanner checks the watermark.

When I check the mail that has been proccessed by MailScanner I find that some messages which have no sender are marked as spam because MailScanner checked the watermark. On other bounced message, which do have a sender address the watermark is not checked

Below is a header of a bounced message which was not marked as spam and was not send to the person who got the error message

Return-Path: <?g>
Received: from 75-44-14-134.hadlaw.com (75-44-14-134.hadlaw.com [] (may be forged))
    by standic-ls.standic.lan (8.13.8/8.13.8) with ESMTP id o67FlPaf022789
    for <kruining at fakecompany.com>; Wed, 7 Jul 2010 17:47:26 +0200
Received: from (
    by rmwlaw.com.inbound15.mxlogic.net (envelope-from <drollnessnpr76 at rmwlaw.com>)
    (ecelerity r(34067)) with ECSTREAM
    id 41/73-73224-F30ZP2Q6; Wed, 7 Jul 2010 11:47:06 -0500
X-Facebook: from HADXP6 ([LBX2RvMgJV5q])
    by www.facebook.com with HTTP (ZuckMail);
Date: Wed, 7 Jul 2010 11:47:06 -0500
To: kruining at fakecompany.com
From: <postmaster at fakecompany.com>
Reply-to: drollnessnpr76 at rmwlaw.com
Subject: Delivery Status Notification (Failure)
Message-ID: 47B7B9EDAC6340DE905D63D452E09AC6 at HADXP6
X-Priority: 3
X-Mailer: ZuckMail [version 1.00]
X-Facebook-Notify: password_reset; mailid=
Errors-To: drollnessnpr76 at rmwlaw.com
MIME-Version: 1.0
Content-Type: multipart/mixed;

Again please forgive me if I can't make it more clear but English is not my native language


-----Original Message-----
From: MailScanner at ecs.soton.ac.uk [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Julian Field
Sent: donderdag 8 juli 2010 10:18
To: MailScanner discussion
Subject: Re: Watermarking, checking bounced mail with sender address

Do you mean the From: address or the envelope sender address?
MailScanner does nothing with the From: address.

On 08/07/2010 07:27, ACHA | Cor van den Berghe wrote:
> Hi all,
> As I understand it MailScanner only checks the watermark on bounced email with no sender address. Is it somehow possible to have MaiScanner check the watermark on all bounced email?
> Lately I get a lot of backscatter mail that have a From: address and I have no idea how to stop it
> Thanks for any help you can give me
> Regards,
> Cor van den Berghe


Julian Field MEng CITP CEng

Martin Hepworth
Oxford, UK

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