DOCUMENT:Q237544  30-SEP-1999  [exchange]
TITLE   :XADM: Unable to Connect Using IMAP/SSL
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5
OPER/SYS:
KEYWORDS:exc55 EXC55SP3Fix

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
-------------------------------------------------------------------------------


SYMPTOMS
========

IMAP clients logging on using Secure Sockets Layer (SSL) may not be able to
connect to the Microsoft Exchange Server computer. The event log on the server
indicates only that the connection to the client is lost. The client logs record
that the server has closed the connection unexpectedly. After it is terminated,
subsequent connection attempts by any client to the IMAP/SSL port (port 993) are
refused.

CAUSE
=====

A fetch command with certain parameters on a larger message (occurs more
frequently on bigger messages) causes the connection to the requesting client to
be unexpectedly closed. The listening thread for port 993 also ends, thus, any
subsequent connection attempts do not succeed.

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: Information Store

+-----------------------+
| File name  | Version  | 
+-----------------------+
| Store.exe  | 5.5.2650 | 
+-----------------------+
| Netif.dll  | 5.5.2650 | 
+-----------------------+
| Gapi32.dll | 5.5.2650 | 
+-----------------------+
| Mdbmsg.dll | 5.5.2650 | 
+-----------------------+


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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