((MXECHO))

I have noticed a lot of questions come up regarding the severity of the 8275 error on an Exchange 2003 Server.

Event Type: Error
Event Source: MSExchangeFBPublish
Event Category: General
Event ID: 8275
Date: <date>
Time: <time>
User: N/A
Computer: <server>
Description:
SchedulePlusFreeBusy folder could not be opened for duplicate message deletion on virtual machine <server name>. The error number is 0×80040115.
For more information, click http://www.microsoft.com/contentredirect.asp.

This error normally can be resolved by restarting the System Attendant, if this error is being logged on a cluster failing over to the other node (and then back if desired) would also resolve the error.

Keep in mind that restarting the SA will restart your Information Store service as well so you should schedule this during a maintenance window.

Mail store will not mount, in Exchange System Manager you see an Internal Processing error with error ID c1041724. You also notice an error in the application log, 9518 with error code 0xfffffddc.

How do you find out what is wrong?

First, you need to make sense of the error codes. If you have not used err.exe before, this is a perfect time to become familiar. Download this tool from Microsoft