DOCUMENT:Q230288  30-SEP-1999  [exchange]
TITLE   :XFOR: NDR from IMS Has Incorrect 3-Byte Reason Code
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5
OPER/SYS:
KEYWORDS:exc55 EXC55SP3Fix

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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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 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : winnt:5.5
Issue type        : kbbug
Solution Type     : kbfix

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