XFOR: Recipient Name Not Recognized / Recipient Not Found

This article was previously published under Q168557
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SUMMARY
There is a difference between non-delivery-reports (NDRs) on messages toInternet users with an incorrect domain name and NDRs on messages toInternet users with a correct domain name, but incorrect user name.
MORE INFORMATION
The NDR on a message with an incorrect domain name looks like thefollowing:
    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 addressingerror. You receive this message back from the System Administrator when youhave sent e-mail to a domain name (for example, JUNK.TEST.CA) that does notexist on the Internet. The Internet has "Global" Domain Name Servers thatresolve Domain Names to systems. If this domain name is not found, itcannot 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 othersystem, but the username (Hello, in this example) did not exist. This erroris again most likely due to a sender's addressing error. Check the addressagain, and resend.
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Article ID: 168557 - Last Review: 01/06/2015 02:07:19 - Revision: 3.3

  • Microsoft Exchange Server 5.5 Standard Edition
  • Microsoft Exchange Server 4.0 Standard Edition
  • Microsoft Exchange Server 5.0 Standard Edition
  • kbnosurvey kbarchive kbusage KB168557
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