XFOR: SMTP Log Reports Rescheduled Delivery When Retries=0

When an outgoing SMTP message delivery fails due to an SMTP error, the SMTP log file for the Microsoft Exchange Internet Mail Connector (IMC)reports that a resend will be scheduled. This will be reported in the SMTP log even if resends are disabled on the IMC.

In the properties pages for the IMC it is possible to set the Connector Message Queues Retry Interval for message retries. The default values are .25 (15 minutes), .5 (30 minutes), 1 (one hour), and 4 (four hours). If this value is set to 0 (zero) no retries will be attempted.

If an SMTP message cannot be delivered and SMTP Protocol logging is enabled a message like the following will be written to the SMTP log: This entry is made even though retries are disabled and no additional delivery attempt will be made.

SMTP transactions are logged in the file L000000x.LOG in the Exchange Server\IMCDATA\LOGS subdirectory. Logging is enabled on the Diagnostic Logging page of the IMC properties pages.

Microsoft has confirmed this to be a problem in Microsoft Exchange version 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.