Article ID: 189494
Article Last Modified on 10/28/2006
APPLIES TO
- Microsoft Exchange Server 4.0 Standard Edition
- Microsoft Exchange Server 5.0 Standard Edition
- Microsoft Exchange Server 5.5 Standard Edition
This article was previously published under Q189494
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.
Keywords: kbprb KB189494
