POP3SVC Content Engine 1023   

I have Exchange Server 2000 (SP3) jn the Windows Server 2000 (SP4) computer. 
And I receved next message in the Event Log:

Source: POP3SVC
Category: Conetn Engine
ID: 1023
"Error 0xfffff9bf occurred while rendering message 0001-0000005c4782 for 
download for user Uvarov@expocentr.ru. 

For more information, click http://www.microsoft.com/contentredirect.asp. "

What's the problem?

Michael S. Androsov
EXPOCENTR

date: Tue, 20 Feb 2007 23:46:19 -0800   author:   Michael S. Androsov