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Exchange 2010 users bombard by backscatter notification emails

Posted on 2016-10-18
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Last Modified: 2016-11-17
Recently our Exchange users received a lot Delivery notification emails from Exchange Administrator, I know this is "backscatter" type email, end users just get bombarded by this kind email, how can I stop the administrator from sending out these kind emails? I've did research but all technotes that I found was talking about how to disable Exchange from sending NDR to other servers.
Thanks in advance!

The email looks like this:
=============================================================
From: Administrator
Sent: Tuesday, October 18, 2016 5:54 AM
To: Bob Smith <bobs@mycompany.com>
Subject: Delivery Notification -

The message or attachment did not reach the intended recipient(s). Please contact your help desk for assistance:

  From:    yugakusampo@tokyo.email.ne.jp
  To:      bobs@mycompany.com
  Date:    Tue, 18 Oct 2016 11:53:50 GMT
  Subject:

  Reason:  
  Action:  deny

Full message header:

Received: from unknown [202.224.39.198] (EHLO mail2.asahi-net.or.jp)
      by s12p02m067.mxlogic.net(mxl_mta-8.5.0-1466)
      with ESMTP id e4d06085.0.5641447.00-1358.9718122.s12p02m067.mxlogic.net (envelope-from <yugakusampo@tokyo.email.ne.jp>);
      Tue, 18 Oct 2016 05:53:50 -0600 (MDT)
Received: from tokyo.email.ne.jp (cpe-76-90-131-181.socal.res.rr.com [76.90.131.181])
      by mail2.asahi-net.or.jp (Postfix) with ESMTP id 81CB4BA42;
      Fri, 14 Oct 2016 02:20:32 +0900 (JST)
Message-ID: <C789FE7B.E9170B51@tokyo.email.ne.jp>
Date: Thu, 13 Oct 2016 10:20:30 -0700
Reply-To: "kelly@promotionstore.com" <yugakusampo@tokyo.email.ne.jp>
From: "kelly@promotionstore.com" <yugakusampo@tokyo.email.ne.jp>
X-Mailer: Apple Mail (2.1082)
MIME-Version: 1.0
To: <bobs@mycompany.com>,
      <d.burkley@championjobs.com>,
      <kevinmcl@charter.net>,
      <emily.green@chk.com>
Subject: order tracking info
Content-Type: multipart/mixed;
      boundary="------------321443375434486328360401"
0
Comment
Question by:urbuddy
4 Comments
 
LVL 23

Accepted Solution

by:
Brian B earned 400 total points (awarded by participants)
ID: 41850185
Some anti-spam devices/services can help deal with backscatter. Some devices (such as Barracuda) can tag outbound email, thus any legitimate NDR coming back would have a tag. So no tag, it gets thrown out as junk.

Since your question has been marked as neglected, I have also added some more topics to help bring it to more Expert's attention.
0
 

Author Comment

by:urbuddy
ID: 41852846
Brian, thank you very much for your help!
Hopefully I can get a easy solution.
Jack
0
 
LVL 36

Assisted Solution

by:Jian An Lim
Jian An Lim earned 100 total points (awarded by participants)
ID: 41865119
Exchange 2010 default defense is very limited.

you will need a 3rd party AV/Spam service as they will treat backscatter and scan whether it is legit email or not.

further, Exchange 2010 is soon will be out of support so i will recommend you use something other than Exchange.
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