DOCUMENT:Q158309  26-NOV-1999  [exchange]
TITLE   :XFOR: Event ID 178 During Directory Synchronization
PRODUCT :Microsoft Exchange
PROD/VER:winnt:4.0,5.0,5.5
OPER/SYS:
KEYWORDS:exc4 exc5 exc55

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The information in this article applies to:

 - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

Directory synchronization may fail between a computer running Microsoft Exchange
Server and a Microsoft Mail for PC Networks postoffice. The following event
appears in the Microsoft Windows NT Event Viewer:

   Event ID: 178
   Source: MSExchangeMTA
   Category: X400 Service

   An error occurred while transferring in message because the directory name
   could not be expanded to an O/R address. An X.400 API Association (XAPIA)
   unable-to-transfer reason code and unrecognized-OR-name diagnostic code were
   returned. [MTA SUBMIT 17 73] (14)

CAUSE
=====

This event occurs if the Directory Synchronization object does not have a valid
X.400 address.

RESOLUTION
==========

To resolve the problem:

1. Using the Exchange Server Administrator program, select the Exchange Server
   container, double-click the Directory Synchronization object, and then click
   the E-mail Addresses tab.

2. Type a valid X.400 address.

MORE INFORMATION
================

For additional information about Microsoft Mail for PC Networks directory
synchronization, please click the article number below to view the article in
the Microsoft Knowledge Base:

   Q96060 PC DirSync: Directory Synchronization (Dir-Sync)

For additional information on Exchange Server directory synchronization, please
see Chapter 14 of the Microsoft Exchange Server Administrator's Guide.

For additional information about how to perform manual directory synchronization
between Microsoft Mail for PC Networks postoffices and Exchange Server, please
click the article numbers below to view the articles in the Microsoft Knowledge
Base:

   Q147464 XFOR: Manual Dirsync with Exchange Server as Dirsync Server

   Q148309 XFOR: Manual Dir-Sync with Exchange as Dir-Sync Requestor

For additional information about Event ID 178 from the Exchange Server message
transfer agent, please click the article number below to view the article in the
Microsoft Knowledge Base:

   Q155104 Event ID 178 Results if Mailbox has No X.400 Address

Additional query words: dirsync DXA DX

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Keywords          : exc4 exc5 exc55 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : winnt:4.0,5.0,5.5
Issue type        : kbprb

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