Microsoft KB Archive/817226

= Third-party IMAP4 client programs may stop responding when you connect to an Exchange 2000 Server computer over an SSL connection =

Article ID: 817226

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange 2000 Server Standard Edition
 * Microsoft Exchange 2000 Enterprise Server

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SYMPTOMS
When you connect to a Microsoft Exchange 2000 Server computer by using a third-party Internet Message Access Protocol, Version 4rev1 (IMAP4) client program over a Secure Sockets Layer (SSL) connection, the IMAP4 client program may stop responding (hang).



CAUSE
This issue may occur if memory buffers on the network transport stack are not completely flushed. This issue occurs because the third-party IMAP4 client program does not send &quot;no operation&quot; (NOOP) commands to the Exchange 2000 computer.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Exchange 2000 Server service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;[LN;CNTACTMS]

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 3 (SP3). For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

301378 How to obtain the latest Exchange 2000 Server service pack

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

  Date         Time   Version      Size    File name --  04-Dec-2002  21:25  6.0.6376.0   32,768  Expop3.dll 04-Dec-2002 21:26  6.0.6376.0   32,768  Exproto.dll 04-Dec-2002 19:03  6.0.6376.0   40,960  Febecfg.dll 04-Dec-2002 21:25  6.0.6376.0   32,768  Iisif.dll 04-Dec-2002 21:26  6.0.6376.0  135,168  Iisproto.dll 04-Dec-2002 21:26  6.0.6376.0   61,440  Imap4be.dll 04-Dec-2002 19:08  6.0.6376.0  319,488  Imap4evt.dll 04-Dec-2002 19:05  6.0.6376.0  131,072  Imap4fe.dll 04-Dec-2002 21:25  6.0.6376.0  126,976  Imap4svc.dll 04-Dec-2002 21:25  6.0.6376.0   36,864  Pop3be.dll 04-Dec-2002 19:08  6.0.6376.0  303,104  Pop3evt.dll 04-Dec-2002 19:06  6.0.6376.0   24,576  Pop3fe.dll 04-Dec-2002 21:24  6.0.6376.0   73,728  Pop3svc.dll 04-Dec-2002 19:08  6.0.6376.0  163,840  Protomsg.dll



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server.

Additional query words: XCCC

Keywords: kbhotfixserver kbqfe kbqfe kbfix kbexchange2000presp4fix kbbug kbprb KB817226

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