Microsoft KB Archive/258698

= Exchange Client Notification Problems When Microsoft Proxy Is Installed =

Article ID: 258698

Article Last Modified on 4/7/2006

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APPLIES TO


 * Microsoft Proxy Server 2.0 Standard Edition

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This article was previously published under Q258698



SYMPTOMS
If the Winsock Proxy 2.0 client is installed on a Microsoft Exchange 5.5-based server that is configured to use the Microsoft Exchange Internet Mail service, new mail notification may stop working.



CAUSE
The socket address value is corrupted while the SendTo call is in progress. This causes the Exchange store's notification thread to stop notifying clients of new mail.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. 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;EN-US;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 typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:   Date        Time   Version     Size     File name   Platform 06/14/2000 14:05  2.0.390.16  281,872  Rws32.dll   Alpha 06/14/2000 14:05  2.0.390.16  262,416  Wspwsp.dll  Alpha 06/14/2000 14:06  2.0.390.16  161,040  Rws32.dll   Intel 06/14/2000 14:06  2.0.390.16  141,072  Wspwsp.dll  Intel In order to update the Proxy 2.0 Client on the Exchange Server with the problem the fix will need to be applied to the Proxy 2.0 Server. Once the fix is applied, the Proxy 2.0 Client will need to be reinstalled on the Exchange Server from the updated client share on the Proxy Server (<\\\mspclnt>).



WORKAROUND
If you move the Exchange store to a server that does not have the Microsoft Proxy client installed, new mail notification works. The Microsoft Exchange Internet Mail service stays on the computer with the Proxy client installed.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: exchange udp notification mail

Keywords: kbbug kbfix kbqfe kbenv kbhotfixserver KB258698

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