When a Microsoft Exchange user sends a message to a recipient in his or her
Personal Address Book (PAB), the user does not receive a non-delivery
report (NDR) if the PAB entry is invalid. This problem only occurs in the
following circumstance:
- The message has been addressed to an Exchange user in another Microsoft
Exchange site whose address is in the originator's PAB. The PAB entry
has become invalid either because they have been deleted from the system
or their original site no longer exists in the Microsoft Exchange
organization.
- The connector that routes this message is a X.400 Connector configured
as 1984.
- The connector does not have any Connected Sites information.
The message to the invalid PAB entry can be tracked by setting the X.400
Service category of the MSExchangeMTA to Maximum logging in the Exchange
Administrator program. By looking for the 271 and 272 events in the Windows
NT Event Viewer Application log, you see that the message is sent to the
destination Exchange message transfer agent (MTA) successfully, a 271
event, then the resulting NDR from this system is received, a 272 event,
and finally the MTA passes this on to the Exchange information store,
another 271 event. However, the originator of the message does not receive
the NDR.
If you turn on maximum logging for the information store, specifically:
MSExchangeISPriv/Transport Sending & Transport Delivering
MSExchangeISPriv/Transport/General/<all categories>
you see the following error in the Event Log:
Event ID : 2026
Source : MS Exchange Private
Type : Information
Category : Transport
Description : The delivery of a report failed due to error 00000BB8.
The report has been deleted.