DOCUMENT:Q254795  30-JUL-2000  [exchange]
TITLE   :XADM: CDOSYS Stops While Sending or Posting by Using Port
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5
OPER/SYS:
KEYWORDS:exc55 kbWin2000PreSP1Fix kbWin2000sp1Fix

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The information in this article applies to:

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

If a time-out occurs on an Exchange Server 5.5 computer when you send or post by
using Simple Mail Transfer Protocol (SMTP) or Network News Transfer Protocol
(NNTP), the Collaboration Data Objects (CDO) for Windows 2000 (CDOSYS) may stop
responding. This may occur if the remote server is under a very heavy load or if
the server or network is unavailable.

CAUSE
=====

This problem can occur if Exchange Server does not close the connection to the
remote server correctly.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows 2000. For
additional information, please see the following article in the Microsoft
Knowledge Base:

   Q260910 How to Obtain the Latest Windows 2000 Service Pack

STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5.

This problem was first corrected in Windows 2000 Service Pack 1.


Additional query words:

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Keywords          : exc55 kbWin2000PreSP1Fix kbWin2000sp1Fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : winnt:5.5
Issue type        : kbbug
Solution Type     : kbfix

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