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8.2

MDaemon generating NDR with text "Your message does not contain a valid command for this mail server to process.  No action has been taken"

Asked by netstarukltd in Mdaemon, Simple Mail Transfer Protocol (SMTP)

Tags: MDaemon, email, NDR, smtp, SPF

Hi

We have MDaemon email server on a site and one of the users is getting emails from MDaemon as below:

From: MDaemon@clientdomain.com [mailto:MDaemon@clientdomain.com]
Sent: 15 June 2009 13:42
To: lindar@ncytrust.org
Subject: No valid command found

Your message does not contain a valid command for this mail server to process.  No action has been taken.

Message-Id: <FA3RN22309.MXI285@189.xx.yyy.97>
From: lindar@clientdomain.com
Time-Stamp: Mon, 15 Jun 2009 09:39:49 -0300
: Message contains [1] file attachments

The attachment in the email is a junk message selling a weight loss program. The junk message is from the address lindar@clientdomain.com which is the same as the recipient.

It appears MDaemon got this message from outside from a spammer, rejected it for whatever reason "no valid command" and attempted to send this report to the sender. Because the sender address was same as recipient, the report ended up in spam recipient's mailbox.

I want to know what this message from MDaemon means and how I can configure it to drop all emails coming in FROM OUTSIDE with our own domain as the sender. (We don't have a spam filter here with SPF/Sender ID).

Appreciate the help.
[+][-]10/15/09 10:10 AM, ID: 25582549Accepted Solution

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About this solution

Zones: Mdaemon, Simple Mail Transfer Protocol (SMTP)
Tags: MDaemon, email, NDR, smtp, SPF
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Solution Provided By: netstarukltd
Participating Experts: 1
Solution Grade: A
 
[+][-]06/23/09 03:41 AM, ID: 24690555Expert Comment

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[+][-]06/24/09 04:01 AM, ID: 24699889Author Comment

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[+][-]06/24/09 11:39 AM, ID: 24704257Expert Comment

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[+][-]09/21/09 07:29 AM, ID: 25383194Author Comment

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