XCON: MTA Queue Blocked by NDR or Delivery Receipts

ID: Q151785

The information in this article applies to:

Microsoft Exchange Server, versions 4.0, 5.0

SYMPTOMS

An Exchange Server site that backbones over a foreign X.400 system to another Exchange Server site develops a message backlog for mail destined for the remote Exchange Server site. This message backlog is unrelated to any network communication problems. The message delivery problem may be unidirectional; that is, messages are being delivered from the remote site, but not to the remote site.

CAUSE

If a report message (that is, a non-delivery report [NDR], or a delivery receipt) is returned from the remote site and the foreign X.400 system used as a backbone adds unanticipated encoding for the property Report- Additional-Info, the message may block the MTA queue.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: blocked blockage hung stopped queues

Keywords : kbusage kbbug4.00 kbbug5.00 kbfix5.00.sp2 XCON
Version : winnt:4.0,5.0
Platform : winnt
Issue type : kbbug