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XFOR: Recipient Name Not Recognized / Recipient Not Found

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This article was previously published under Q168557

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Summary

There is a difference between non-delivery-reports (NDRs) on messages to Internet users with an incorrect domain name and NDRs on messages to Internet users with a correct domain name, but incorrect user name.

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More information

The NDR on a message with an incorrect domain name looks like the following: 
    Your message did not reach some or all of the intended recipients.

   Subject:hello there
      Sent: 3/27/97 11:18 AM

   The following recipient(s) could not be reached:

      'TEST@JUNK.TEST.CA' on 3/27/97 11:18 AM
            The recipient name is not recognized
            MSEXCH:IMC:SERVER:SITE:ORG 3902 Host Unknown
This is a common error; it is most likely due to a sender's addressing error. You receive this message back from the System Administrator when you have sent e-mail to a domain name (for example, JUNK.TEST.CA) that does not exist on the Internet. The Internet has "Global" Domain Name Servers that resolve Domain Names to systems. If this domain name is not found, it cannot be routed any further.

An NDR from an Exchange 5.5 server on a message with the correct domain name but the incorrect user name looks like the following: 
   Your message did not reach some or all of the intended recipients.

      To: 'hello@microsoft.com'
      Subject: test
      Sent: 3/27/97 11:21:30 AM

   The following recipient(s) could not be reached:

      hello@microsoft.com on 3/27/97 11:21:30 AM
            Recipient Not Found
            MSEXCH:IMC:REMOTESERVER:REMOTESITE:REMOTEORG
This error is a "Recipient Not Found" error. The mail got to the other system, but the username (Hello, in this example) did not exist. This error is again most likely due to a sender's addressing error. Check the address again, and resend.

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Keywords: KB168557, kbusage

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Article Info
Article ID : 168557
Revision : 6
Created on : 10/28/2006
Published on : 10/28/2006
Exists online : False
Views : 271