Article ID: 889160 - View products that this article applies to.
Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows Registry
When you have Microsoft Exchange Server 2003 configured in a front-end/back-end server environment, you may experience the following problem. A user who is connected to the Exchange 2003 front-end server by using an Internet Message Access Protocol, Version 4rev1 (IMAP4) e-mail client program may be unexpectedly disconnected from the session. When this problem occurs, the user may receive an error message that is similar to the following:
If this user connects directly to the Exchange 2003 back-end server by using the IMAP4 e-mail client program, the user is not disconnected from the session.
Connection to the host lost.
Press any key to continue.
This problem may occur if the following conditions are true:
Service pack informationTo resolve this problem, obtain the latest service pack for Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/836993/EN-US/ )How to obtain the latest service packs for Exchange Server 2003
Hotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
PrerequisitesYou must be running Microsoft Exchange Server 2003 Service Pack 1 (SP1) to install this hotfix. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/836993/ )How to obtain the latest service packs for Exchange Server 2003
Restart requirementYou do not have to restart your computer after you apply this hotfix. However, many Exchange-related services are automatically stopped and then restarted when you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace any other hotfixes.
File informationThe 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 -------------------------------------------------------------- 11-Jan-2005 03:40 6.5.7232.67 82,944 Eximap4.dll 11-Jan-2005 03:40 6.5.7232.67 22,016 Expop3.dll 11-Jan-2005 03:41 6.5.7232.67 26,112 Exproto.dll 11-Jan-2005 03:01 6.5.7232.67 27,648 Febecfg.dll 11-Jan-2005 03:40 6.5.7232.67 23,040 Iisif.dll 11-Jan-2005 03:42 6.5.7232.67 133,632 Iisproto.dll 11-Jan-2005 03:42 6.5.7232.67 56,832 Imap4be.dll 11-Jan-2005 03:02 6.5.7232.67 122,880 Imap4fe.dll 11-Jan-2005 03:40 6.5.7232.67 119,296 Imap4svc.dll 11-Jan-2005 03:40 6.5.7232.67 27,136 Pop3be.dll 11-Jan-2005 03:03 6.5.7232.67 12,288 Pop3fe.dll 11-Jan-2005 03:36 6.5.7232.67 69,120 Pop3svc.dll
Hotfix installation informationWarning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
After you install this hotfix, you can use the following new registry value to modify the number of MIME message levels that can be processed in an e-mail message in Exchange 2003:
By default, Exchange 2003 permits 32 MIME message levels to be processed in an e-mail message. You can use this registry value to increase this limit to 256 levels.
Value name: LimitNestingLevels
Value type: REG_SZ
Value data: 32 through 256
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Exchange Server 2003 Service Pack 2.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
(http://support.microsoft.com/kb/817903/ )New naming schema for Exchange Server software update packages
Article ID: 889160 - Last Review: October 25, 2007 - Revision: 4.3
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