XFOR: NDR from Internet Mail Service Contains Incorrect 3-Byte Reason Code Sent to X.400 Connector

ID: Q230288

The information in this article applies to:

Microsoft Exchange Server, version 5.5

SYMPTOMS

Microsoft Exchange Message Transfer Agent (MTA) transfers a NonDeliveryReasonCode of 3-byte integer. The field is defined in X.411 specifications as a 1 byte integer. Some X.400 MTAs cannot handle the extra bytes and may stop processing information.

CAUSE

The NonDeliveryReasonCode being passed is incorrectly set to -1, which is not a valid code.

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the Microsoft Knowledge Base:

Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: Internet Mail Service

File name	Version
Msexcimc.exe	5.5.2594.0
Imcmsg.dll	5.52594.0

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.

Additional query words:

Keywords : exc55 EXC55SP3Fix
Version : winnt:5.5
Platform : winnt
Issue type : kbbug