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Deciphering Email Error

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?

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1 Solution
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.
ttist25Author Commented:
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?
ttist25Author Commented:
Could this be caused by not having a reverse DNS record at myemail.org?

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