- Incoming Simple Mail Transfer Protocol (SMTP) messages are delivered to e-mail recipients.
- Outgoing SMTP messages remain in the outgoing message queue on the Exchange computer and are not delivered to some domains.
Note If you perform additional troubleshooting, you notice that mail is successfully delivered only to e-mail servers that advertise the Extended Simple Mail Transfer Protocol (ESMTP) CHUNKING verb. Examples of e-mail servers that advertise the CHUNKING verb include Exchange 2003 and Microsoft Exchange 2000 Server. - In Exchange Server 2003, the following event is logged in the Application log:
Event type: Warning
Event source: MSExchangeTransport
Event category: Connection Manager
Event ID: 4000
Description: Message delivery to the remote domain 'remotesmtphost.com' failed for the following reason: The handle is invalid.
In Exchange 2000 Server, the following event is logged in the Application log:Event type: Warning
Event source: smtpsvc
Event category: None
Event ID: 4000
Description: Message delivery to the remote domain ' remotesmtphost . com ' failed for the following reason: The handle is invalid.
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