Topic Last Modified: 2006-07-07
The Microsoft® Exchange Server Analyzer Tool queries the Win32_NTLogEvent Microsoft Windows® Management Instrumentation (WMI) class to determine whether an Event 4006 warning has been logged for MSExchangeTransport within the last 24 hours.
If the Exchange Server Analyzer finds that an Event 4006 warning has been logged for MSExchangeTransport within the last 24 hours, the Exchange Server Analyzer displays a warning.
This warning usually indicates that an attempt to send mail to a remote server has failed.
An MSExchangeTransport Event 4006 warning can occur because of the following conditions:
- The connection was dropped by the remote host.
- The remote Simple Mail Transfer Protocol (SMTP) service
rejected AUTH negotiation.
- The server that is trying to deliver the message cannot access
the message delivery information in the message.
- An SMTP error occurred.
- The server that is trying to deliver the message cannot connect
to the remote server.
- A smart host that has been specified in the properties of the
SMTP virtual server is unreachable for any reason.
For more information about an MSExchangeTransport Event 4006 warning, you can locate event details from the Events and Errors Message Center (http://go.microsoft.com/fwlink/?LinkId=34258).
For more information about mail relay issues in Exchange Server, see Microsoft Knowledge Base article 895853, "How to troubleshoot mail relay issues in Exchange Server 2003 and in Exchange 2000 Server" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=895853).
For more information about mail flow and SMTP issues, see "Troubleshooting Mail Flow and SMTP" in the Exchange Server and Transport Routing Guide (http://go.microsoft.com/fwlink/?LinkID=67875).