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Q189494: XCON: MTA 9277 RPC Cancel Call for Thread

Article: Q189494
Product(s): Microsoft Exchange
Version(s): WinNT:4.0, 5.0, 5.5
Operating System(s): 
Keyword(s): 
Last Modified: 18-APR-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

A large number (up to hundreds) of Event IDs: 9277 appear in the application
event log, similar to the following:

  9277: MSExchangeMTA
  The MTA has issued an RPC Cancel call for thread 22, Locality Table
  Index:
  142, Time (ms): 1804070, Cancel result: 0 [TRUMAN RPC inactive
  ncacn_ip_tcp:192.168.20.3[1966] BASE IL] (14)

CAUSE
=====

The message transfer agent (MTA) makes remote procedure calls (RPCs) to other
MTAs in the normal course of operation. When the MTA has made a call to another
computer and does not receive a response within two minutes, it cancels the RPC.
This is normal. A massive number of these RPC cancels indicates any of several
possible problems, such as the following:

- network problems

- heavy network traffic

- network latency issues (not uncommon with frame relay networks with guaranty
  bandwidths of less than 128 kilobits per second)

- problems with the remote computer

- router problems (or router changes, including filtering or other software
  running on the routers that analyzes and filters or alters network packets)

- protocol stack problems

WORKAROUND
==========

To work around this problem, verify basic connectivity between the Exchange
Server computers, or fix the network issues.


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Keywords          :  
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : WinNT:4.0, 5.0, 5.5
Issue type        : kbprb

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