Microsoft KB Archive/181721

= Messages not Being Delivered Over an Association =

Article ID: 181721

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Exchange Server 4.0 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition
 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q181721



SYMPTOMS
The Microsoft Exchange message transfer agent (MTA) has a backlog of messages (up to the default threshold) waiting to be delivered. The MTA makes an association with another LAN-MTA (RPC connection), but does not deliver mail over this connection.

Various errors may appear in the applications event log concerning RPC problems. These may include the following events and other similar errors that indicate RPC problems:

Event id = 9316

Category = Interface

Source = MSExchangeMTA

An RPC communications error occurred. No data was sent over the RPC connection. Locality table (LTAB) index: 53. Windows NT error: 1727. The MTA will attempt to recover the RPC connection. [BASE IL KERNEL 24 512] (12)

Event id = 9277

Category = Interface

Source = MSExchangeMTA

The MTA has issued an RPC Cancel call for thread 1, Locality Table Index: 160, Time (ms): 1275740, Cancel result: 0 [SLPS100 MtaBind ncacn_ip_tcp:100.5.51.16[1911] BASE IL] (14)



CAUSE
The Windows NT RPC component on the receiving computer puts the association in the wrong address space. Therefore, when the next bind arrives on the correct address, it cannot find the association and sends a Bind NAK.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.



MORE INFORMATION
The initiating MTA tries to send mail to the receiving MTA, but the receiving MTA does not believe it has an association with it because the RPC put the association in the wrong address. It will NAK the RPC Bind request.

After the message threshold has been reached (default value is 50) on one of the MTAs, it will make a new association and begin delivering messages again.

Additional query words: 4.00 5.00 5.50 RT-Turn-Please RT-Turn-Give ASB token give XADM

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe KB181721

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