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Event ID: 10301 Source: MSExchangeTransport

Level
Description
OMA Categorizer is unable to initialize. The initialization function returned error code "<error code>".
Comments
 
Error code: 0x80040920 = LDAP_NO_SUCH_OBJECT - This may be recorded when the Active Directory is removed from a server running Exchange (basically an orphaned Exchange server).
Error code: 0xc0020018 =  RPC_NT_SERVER_TOO_BUSY - From a newsgroup post: "I suggest checking the IIS logs for errors on HTTP requests to the Exchange vdir. Enable IIS logging by selecting Properties on the context menu associated with the Default Web Sites folder in IIS Manager and setting the "Enable Logging" checkbox on the Web Site tab. Also make sure that the "Log
visits" checkbox is checked on the Virtual Directory tab of the property pages associated with the Exchange virtual directory."
See MSEX2K3DB for information on this event.

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