Microsoft KB Archive/290725

= SMTP Service Does Not Handle Large Message ID Correctly =

Article ID: 290725

Article Last Modified on 1/31/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1

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This article was previously published under Q290725



SYMPTOMS
When you send a Simple Mail Transfer Protocol (SMTP) message that contains a message ID larger than 1.5 kilobytes (KB), Exchange Server stops responding.

This behavior occurs on Windows 2000 Server-based computers that run Microsoft Exchange Server.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 2.



MORE INFORMATION
When a message ID is larger than 1.5 KB, the receiving server accepts the message but does not send an acknowledgement, and the sending server tries again. Every delivery attempt duplicates the message, and copies of the message pile up on both servers. This issue is even more severe if the delivery route involves more than just the two servers.

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Keywords: kbbug kbfix kbwin2000presp2fix kbqfe kbhotfixserver KB290725

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