Microsoft KB Archive/236586

= XCON: Mail Flow Stops with MTA Event ID 4287, Error Code 8640 =

Article ID: 236586

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q236586





SYMPTOMS
Over particularly loaded slow links and very slow response times, mail flow over an X.400 Connector may appear to be stopped.

The MTA logs the following event in the application log:

Event ID: 4287

Description: Internal error in POP4 with error code 8640.

In Calls.out you can read: Call-stack for TID 006 (NT:0316) : POP4 DOWN     Busy 0%, stalled on send to q/loc 004, normally services q 016



RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 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: Message Transfer Agent (MTA)



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.

Keywords: kbbug kbfix kbqfe KB236586

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