Microsoft KB Archive/246278

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XCON: Mail Is Backing Up in Connector Queues, Events 289 and 1294 Appear

Article ID: 246278

Article Last Modified on 2/27/2007


  • Microsoft Exchange Server 5.5 Standard Edition
  • Microsoft Exchange 2000 Server Standard Edition

This article was previously published under Q246278


When you use Exchange Server 5.5 or Exchange 2000 Server, mail may back up in connector queues. When you ping the destination server, you may receive either slow responses or complete timeouts. Also, Event Viewer may display the following events:

Event ID: 289
Source: MSExchangeMTA
Type: Warning
Category: X.400 Service
Description: A connection to /O=OrganizationName/OU=SiteName/CN=Configuration/CN=Connections/CN=ConnectorName could not be opened. [MTA XFER-IN 17 26] (12)

Event ID: 1294
Source: MSExchangeMTA
Type: Warning
Category: X.400 Service
Description: An association with entity /O=OrganizationName/OU=SiteName/CN=Configuration /CN=Connections/CN=ConnectorName ended abnormally. [198 1 0 1 PLATFORM KERNEL 20 130] (10)


This behavior can occur because of network-related problems that are external to Exchange Server performance. When there is not enough network bandwidth for any additional traffic, the message transfer agent (MTA) cannot create the necessary connections.


To resolve this issue, troubleshoot network connectivity and bandwidth issues.


For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

169790 How to Troubleshoot Basic TCP/IP Problems

Additional query words: bandwidth exch2kp2w

Keywords: kbprb KB246278