XFOR: "Forward All Mail with Unresolved Recipients" Feature Does Not Work to All Hosts

When you use the "Forward all mail with unresolved recipients to host" feature on an SMTP virtual server in Exchange 2000, messages may not be delivered correctly. The e-mail messages may sit in the queue to the host that is specified in Exchange System Manager, and messages may be sent over and over again, which causes time-outs.

This problem can occur if Exchange 2000 sends the message in STNEF and does not send "CRLF.CRLF" properly to end the SMTP conversation. The receiving host might continually log warnings that indicate that the session timed out.

To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: The English version of this fix should have the following file attributes or later:

Component: SMTP Categorizer

Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 1.

For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base: