DOCUMENT:Q188979  22-APR-1999  [exchange]
TITLE   :XADM: NDR When Sending to Recipient From Offline Address Book
PRODUCT :Microsoft Exchange
PROD/VER:WinNT:5.5
OPER/SYS:
KEYWORDS:exc55sp2fix

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you work offline and send a message to a recipient selected from the
Offline Address Book, you may receive a systematic Non Delivery Report for a
specific recipient:

   No transport provider was available for delivery to this recipient

CAUSE
=====

Duplicate alias names cannot occur inside an Exchange Server site; however, they
can occur inside an Exchange Server organization, causing the NDR above.

RESOLUTION
==========

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

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


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 2.



Additional query words: OAB
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Keywords          : exc55sp2fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : WinNT:5.5
Issue type        : kbbug
Solution Type     : kbfix

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