Event ID - 8217

Event Id8217
SourceEXCDO
DescriptionThe processing of the recurring appointment with the subject "Updated: 2:30...Meeting" in mailbox: username failed with error code 0x8000ffff. This appointment will not be visible in the Web client or other non-MAPI client.
Event InformationOn your Exchange 2000 computer, this event will be logged along with few more events ids (8217, 8230) from the same source. 
CAUSE :
This problem occurs because of an unsuccessful Multipurpose Internet Mail Extensions (MIME) conversion in the Exchange Server Imail component, and occurs when the appointment to be converted has a blank e-mail address. IMAIL does not correctly test for blank e-mail address information when it converts the appointment. 
RESOLUTION :
To resolve this problem, obtain the September 2003 Exchange 2000 Server Post-Service Pack 3 (SP3) Rollup.
Reference Links Event IDs 8217, 8206, and 8230 Appear Repeatedly in the Application Event Log

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