XCON: ECB Usage Count Events Appear with Large Directories (186043)
The information in this article applies to:
- Microsoft Exchange Server 5.5
This article was previously published under Q186043 SYMPTOMS
When you send a message to a Microsoft Exchange Server computer with a
directory that contains an extremely large number of mailboxes and
distribution lists, numerous 9405 events may appear in the event log with a
source of MSExchangeMTA. These events indicate that the problem is related
to the number of entity control blocks (ECBs) that are being used. This
problem can also occur when you perform directory replication with a
directory that contains an extremely large number of mailboxes and
distribution lists.
CAUSE
This problem occurs because the ECB usage count is maintained incorrectly.
STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem has been corrected in the latest U.S. service
pack for Microsoft Exchange Server version 5.5. For information on
obtaining the service pack, query on the following word in the Microsoft
Knowledge Base (without the spaces):
| Modification Type: | Minor | Last Reviewed: | 4/28/2005 |
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| Keywords: | kbbug kbfix KB186043 |
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