Messaging Gateway

We use a Brightmail implementation on Network Solutions hosts and its seems that Brightmail stuffs MIME encoded attachments into the header of emails (X-Brightmail-Tracker: AAAAAQAAAlk=).  Not only does this double the size of the email, but it makes removal of the attachment impossible in MS Outlook. Users are not happy as we handle lots of > 20MB attachments.

First, can anyone confirm that Brightmail does this? Second, can anyone tell me if it is possible to get it to stop? Third, is there a way to get rid of the attachment in the header?

Thanks,

Howard

Hi,

No Brightmail doesn't add any attachments, it may (depending on the integration of Symantec Brightmail Message Filter with your MTA) add the header line of text that you mentioned. This would not make any significant impact to the overall size of the message.

Amanda

Many thanks Amanda.  I just talked to NS and they say that they do not use Brightmail.  Is it possible that this header is coming from my Norton instance on my workstation?

I just check with a 6 MB test email.  It appeared without a big header on NS's webmail, but on my machine in Outlook it became 16 MB. When I remove the attachemtn it message becomes 7 MB with a header that is HUGE!

Regards,

Howard

Amanda,

In case it helps, the header below is from an empty email (as dsiplayed by MS Outlook) by that is sized at 3 MB. The was an attachement in the 6MB  email that was 3 MB but was removed.

ABC@DEF and UVW@XYZ below replaces the receiving and sending email.

Regards,

Howard

X-Apparently-To: ABC@DEF via 76.13.9.23; Fri, 04 Mar 2011 07:01:53 -0800
Received-SPF: none (mta1065.mail.sk1.yahoo.com: domain of UVW@XYZ does not designate permitted sender hosts)
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X-Originating-IP: [205.178.146.64]
Authentication-Results: mta1065.mail.sk1.yahoo.com  from=XYZ; domainkeys=neutral (no sig);  from=XYZ; dkim=neutral (no sig)
Received: from 127.0.0.1  (EHLO omr14.networksolutionsemail.com) (205.178.146.64)
  by mta1065.mail.sk1.yahoo.com with SMTP; Fri, 04 Mar 2011 07:01:52 -0800
Received: from cm-omr4 (mail.networksolutionsemail.com [205.178.146.50])
    by omr14.networksolutionsemail.com (8.13.6/8.13.6) with ESMTP id p24F1Nj4002117
    for <kidorf@yahoo.com>; Fri, 4 Mar 2011 10:01:27 -0500
Authentication-Results:  cm-omr4 smtp.user=UVW@XYZ; auth=pass (LOGIN)
X-Authenticated-UID: UVW@XYZ
Received: from [98.109.137.2] ([98.109.137.2:9296] helo=Pioneer1)
    by cm-omr4 (envelope-from <UVW@XYZ>)
    (ecelerity 2.2.2.41 r(31179/31189)) with ESMTPA
    id 1F/FD-23858-FAEF07D4; Fri, 04 Mar 2011 10:01:27 -0500
From: "MY NAME" <UVW@XYZ>
To: <ABC@DEF>
Subject: FW:
Date: Fri, 4 Mar 2011 10:01:02 -0500
Organization: ORGANIZATION
Message-ID: <000001cbda7c$fac622c0$f0526840$@UVW@XYZ>
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Content-Language: en-us
X-Brightmail-Tracker: AAAAAQzCY6M=
X-Brightmail-Tracker: AAAAAA==

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Hi,

I'm not sure if you're looking at the default webmail view, but typically the full internet headers are not visible.

So just to clarify, the header added by Brightmail (which may be included in your desktop Norton depending on the version) is not a MIME attachment, it's an X-header, just 2 lines of text in this email header.

The attachment in the email above is an image, DSC_0020 crop.gif which is not added Brightmail. If you can't see the attachment in the email, there may be issues with the MTA or MUA recognising the MIME Content-Type header in this email.

Amanda

Yes, Amanda, in Outlook I look at athe headers in the "Message Options" dialog.

Oddly, the entie original meddage appeads inthe "Internet Headers". Text, attachments, everything. It doubles the size of the email!  The DSC_0200 crop.gif, was a test image that I was using.

The ext adn the other stuff shouldn;t be in the header, I would guess! Do you have anyidea how it got there?

Howard