Home | Troubleshooting |  Quick Setup  |  Cisco How to  |  Data Recovery  |  Forums   | Blog | IT Exam Practice | Services  | About Us | Chicagotech MVP  | Search  | Contact Us  |                  Laptop for rent: $35 per day plus $10 for additional day

rental
 

 

Case Study – NDR: #5.4.0 - The destination server for this recipient could not be found in Domain Name Service (DNS)

Situation: The client just installed SBS 2003 and FQDN is server.chicagotech.local. He uses dyndns.org to create MX pointing to mail.chicagotech.net. Since he doesn't have a router, he uses the SBS as RRAS with NAT enabled. He can send email out but not receive from outside. The internal email works. The outside sender may receive this NDR: 5.4.0: The following recipient(s) could not be reached:   BobLin@chicagotehc.net on 8/15/2005 7:46 AM
  The destination server for this recipient could not be found in Domain Name Service (DNS). Please verify the email address and retry. If that fails, contact your administrator.   <mail.ms-mvps.net #5.4.0>.

Troubleshooting:

  1. NAT has opened SMTP port.
  2. Telnet port 25 looks like this: mail.chicagotehc.net claims to be non-existent host chicagotehc.net: 220 chicagotech.net Microsoft ESMTP MAIL Service, Version: 6.0.3790.211 ready at Mon, 15 Aug 2005 11:32:47 -0500

Analysis:

after studying all information carefully, we find the BobLin@chicagoteHC.net doesn’t matches the real domain name BobLin@chicagoteCH.net. To confirm that, we open Exchange System Manager>ChicagoTech>Server>servername>Protocol>HTPP>Exchange Virtual Server. Right-click on Exchange and select Properties. It displays ChicagoTehc.net instead of ChicagoTech.net. (Note: you can’t change the name there and it is grayed out).

Solution: run SBS Connect to the Internet Wizard to change the name.

Post your questions, comments, feedbacks and suggestions

Contact a consultant

Related Topics

Lost some sent emails or emails never reach to the recipient
SMTP communication problem

Previous Page   Next Page
 

 


 

 

Hit Counter   This web is provided "AS IS" with no warranties.
Copyright © 2002-2018 ChicagoTech.net, All rights reserved. Unauthorized reproduction forbidden.