Microsoft KB Archive/188040

= XCON: MTA Disconnects and 2004 Event Appears in Event Log =

Article ID: 188040

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 Q188040





SYMPTOMS
When you send a message through the X.400 Connector, the message transfer agent (MTA) may disconnect and the following events may be displayed in the event log:   A command was sent at the network services interface. Control block index = 1 Internal Connection Handle (LPI) = 1-15-1 Message type = NDATA request [POP4 POP4 UP 7 21] (8)

Event: 2004 Type: Warning Category: Internal Processing Description: Attempted to log an unknown event/error. Product identifier 0, Event/error code 255 [BASE TCP/IP DRVR 8 0] (14)



CAUSE
This problem occurs if an error is returned after Winsock flow control has been established between the two servers.



STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem has been corrected in the latest U.S. service pack for Microsoft Exchange Server version 5.5. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: dcl

Keywords: kbbug kbfix kbqfe KB188040

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