mail delivery failed validating sender

Tracey Bakewell · Joined: 06 Aug 2007 Posts: 1

Sporadic senders are receiving this NDR lately to sporadic internet e-mail
addresses. Once it starts happening to a specific recipient, it continues to
happen.

Archived from group: microsoft>public>exchange2000>interop

Tracey Bakewell · Joined: 06 Aug 2007 Posts: 1

In addition to the original problem. I'm using Exchange 5.5 with all hot
fixes available for download. Examples of the email text that is in the NDR
are:

This message was created automatically by mail delivery software.

A message that you have sent could not be delivered to one or more
recipients. This is a permanent error. The following address failed:

: Validating Sender

Included is a copy of the message header:
-----------------------------------------
Received: from unknown [12.7.130.178] (EHLO mail.tharco.com)
by p03m105.mxlogic.net (mxl_mta-2.5.0-46)
with ESMTP id 17841814.207051.467.p03m105.mxlogic.net (envelope-from
);
Thu, 28 Oct 2004 13:28:49 -0600 (MDT)
Received: by slz_exchange1 with Internet Mail Service (5.5.2657.72)
id ; Thu, 28 Oct 2004 12:29:38 -0700
Message-ID:
From: Tracey Bakewell
To: "firstname.lastname@domain-name.com'"

Subject: Non Deliverables
Date: Thu, 28 Oct 2004 12:29:37 -0700
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2657.72)
Content-Type: text/plain;
charset="iso-8859-1"

"Tracey Bakewell" wrote:

> Sporadic senders are receiving this NDR lately to sporadic internet e-mail
> addresses. Once it starts happening to a specific recipient, it continues to
> happen.

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