Microsoft KB Archive/140976

-

The information in this article applies to:


 * Microsoft Exchange Server, version 4.0

-

SYMPTOMS
The Microsoft Exchange Message Transfer Agent (MTA) fails to send messages when it needs to connect to a large number of other MTAs. The following message appears in the Windows NT Event Log:

Event ID:    1023 Source:      MSExchangeMTA Type:        Warning Category:    Configuration Description: Unable to start the association due to a resource shortage. There are no available Kernel Control Blocks. [PLATFORM MAIN BASE 1 32] (14)

MORE INFORMATION
When Microsoft Exchange Link Monitors are in use, there is an increased chance of seeing this problem because they produce a large number of concurrent connections.

This problem will occur in an environment where there are lots of MTA's, in other words, in a large Organization or a large Site.

STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem was corrected in Microsoft Exchange Server 4.0 U.S. Service Pack 2. 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" Keywords         : kbother kbbug4.00 XADM Version          : 4.0 Platform         : WINDOWS Issue type       : Last Reviewed: March 11, 1999