Hi all, we have exchange 2003 SP2 Frontend/Backend Topology One user receives one external message 8 days later: Here is the track log on the frontend server; 6/23/2010 3:15 AM SMTP: Message Submitted to Advanced Queuing 6/23/2010 3:15 AM SMTP: Started Message Submission to Advanced Queue 6/24/2010 3:03 AM SMTP: Message Submitted to Advanced Queuing 6/24/2010 3:03 AM SMTP: Started Message Submission to Advanced Queue 6/28/2010 3:03 AM SMTP: Message Submitted to Advanced Queuing 6/28/2010 3:03 AM SMTP: Started Message Submission to Advanced Queue 6/30/2010 3:04 AM SMTP: Message Submitted to Advanced Queuing 6/30/2010 3:05 AM SMTP: Started Message Submission to Advanced Queue 6/30/2010 3:05 AM SMTP: Message Submitted to Categorizer 6/30/2010 3:05 AM SMTP: Message Categorized and Queued for Routing 6/30/2010 3:05 AM SMTP: Message Routed and Queued for Remote delivery 6/30/2010 3:05 AM SMTP: Message Categorized and Queued for Routing 6/30/2010 3:05 AM SMTP: Message Routed and Queued for Remote delivery 6/30/2010 3:05 AM SMTP: Started Outbound Transfer of Message 6/30/2010 3:05 AM SMTP: Message transferred to backendserver.xyz.local through SMTP 6/30/2010 3:05 AM SMTP: Started Outbound Transfer of Message 6/30/2010 3:05 AM SMTP: Message transferred to backendserver.xyz.local through SMTP Here is the track log on the backend server: 6/30/2010 3:05 AM SMTP: Message Submitted to Advanced Queuing 6/30/2010 3:05 AM SMTP: Started Message Submission to Advanced Queue 6/30/2010 3:05 AM SMTP: Message Submitted to Categorizer 6/30/2010 3:05 AM SMTP: Message Categorized and Queued for Routing 6/30/2010 3:05 AM SMTP: Message Queued for Local delivery 6/30/2010 3:05 AM SMTP: Message Submitted to Advanced Queuing 6/30/2010 3:05 AM SMTP: Started Message Submission to Advanced Queue 6/30/2010 3:05 AM SMTP: Message Submitted to Categorizer 6/30/2010 3:05 AM SMTP: Message Categorized and Queued for Routing 6/30/2010 3:05 AM SMTP: Message Queued for Local delivery 6/30/2010 3:05 AM SMTP: Message Delivered Locally to multiple recipients 6/30/2010 3:05 AM SMTP: Store Driver: Message Delivered Locally to Store to user1@xyz.com 6/30/2010 3:05 AM SMTP: Store Driver: Message Delivered Locally to Store to user2@xyz.com _________________________ From the logs, the problem resides on the frontend server and it takes 8 days to deliver to the backend server. on 6/23/2010, the frontend server was scheuled to reboot. at 3:00AM. Did rebooting at 3:00AM cause this issue? Can anyone help me out and how should I resolve this? Thank you.

Does all the incoming mails delay 8 days permanently? Does the delay only happen when receiving the mails from a specific external domain? Could the issue be reproduced? If yes, please increase the logging level for transport components on the exchange servers, reproduce the issue, see if there’s any related information in the application log for troubleshooting How to Modify Logging Settings for MSExchangeTransport James Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com