[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now


Deciphering Email Error

Posted on 2006-07-24
Medium Priority
Last Modified: 2010-10-05
Can anyone shed light on how to decipher the following error message?

I received this error message after composing and sending a new email:

Reporting-MTA: dns; eastrmmtao05.cox.net
Arrival-Date: Mon, 24 Jul 2006 11:52:41 -0400
Received-From-MTA: dns; mypc (xx.xxx.xx.xx)

Final-Recipient: RFC822; <user@destination.com>
Action: failed
Status: 5.1.8
Remote-MTA: dns; mail1.visi.net (
Diagnostic-Code: smtp; 573 me@myemail.org unknown user account

I've changed identifying information for privacy.  "mypc" is my computer name and "xx.xxx.xx.xx" is my (outside) IP address.

The "user@destination.com" is the email I am trying to send to and "me@myemail.org" is the account I am having trouble sending from.

This issue seems to be domain wide on both sides (all users at myemail.org are unable to send to all users at destination.com).

I'm not having trouble sending to other domains and am able to receive email from other domains.

Also, myemail.org is not hosted with "visi.net".  Could this be a DNS configuration issue at destination.org?

Question by:ttist25
  • 2
LVL 32

Accepted Solution

jhance earned 2000 total points
ID: 17169655
The key information is here:

>>>Diagnostic-Code: smtp; 573 me@myemail.org unknown user account

What this means is that there is NO user account "me" at the server for "myemail.org" _OR_ for some reason the server is reporting this even if this account does exist.  Sometimes anti-spam software does this to prevent re-sends.

You should contact the admin for the destination email server and see if he can track this down in their server logs.

Author Comment

ID: 17169781
Thanks J.

That's the troubling part.  The user is a valid user and is able to send and receive email to/from other domains.

The intersting part is the Reporting MTA of visi.net is not where the email is hosted.  

Knowing this - I'm thinking theres an erroneous DNS record at destination.org

Would you agree?

Author Comment

ID: 17170158
Could this be caused by not having a reverse DNS record at myemail.org?

Featured Post

 The Evil-ution of Network Security Threats

What are the hacks that forever changed the security industry? To answer that question, we created an exciting new eBook that takes you on a trip through hacking history. It explores the top hacks from the 80s to 2010s, why they mattered, and how the security industry responded.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you’re involved with your company’s wide area network (WAN), you’ve probably heard about SD-WANs. They’re the “boy wonder” of networking, ostensibly allowing companies to replace expensive MPLS lines with low-cost Internet access. But, are they …
How to fix a SonicWall Gateway Anti-Virus firewall blocking automatic updates to apps like Windows, Adobe, Symantec, etc.
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

873 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question