This article was previously published under Q319653
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The Microsoft Exchange information store logs event ID 2024 repeatedly in the Application event log.
Event Type: ErrorEvent Source: MSExchangeIS Mailbox StoreEvent Category: MTA Connections Event ID: 2024Date: 3/2/2002Time: 4:24:35 PMUser: N/AComputer: <Computername>Description: Unable to access the object manager (OM) object from the Microsoft Exchange MTA for MH_T_MTS_IDENTIFIER, MH_T_EXTERNAL_TRACE_INFO, MH_T_EXPANSION_HISTORY.
Exchange System Manager also shows a backlog in the X.400 queue to one or more local storage groups.
A corrupted message at the head of queue blocks delivery for that queue.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
NOTE: Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 2.
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 3.
In cases where the processing of the message content causes an error (InvalidContent, VersionMismatch, and SyntaxError), the message is deleted from the queue and an event is logged in the Application event log. Deleting the message unblocks the queue and allows message delivery to occur.
A Warning event ID 2092 similar to the following is logged in the Application event log:
Event Type: WarningEvent Source: MSExchangeIS Mailbox StoreEvent Category: MTA Connections Event ID: 2092Date: 3/2/2002Time: 4:24:35 PMUser: N/AComputer: <Computername>Description: A corrupted message was received from the MTA and a non-delivery report cannot be generated - it has been removed from the Transfer-In queue. Error %1.