Event ID: 1101
Event Type: Error
Source: MSExchangeIS Mailbox
Cat: Background Cleanup

Description: Error 0x8004010f occurred on message .... during a background cleanup on database ...

KB: 271984

I looked through all other events, all Windows NT events, and didn't find the error listed at all, which clearly shows up on the machines event log.  Could this be due to the fact that exchange clusters and MOM really just don't get along, even after SP1?

The article that addresses this error says it can safely be ignored, however I'm wondering why this event isn't even captured by MOM at all.

Any clue as to why this event isn't being captured at all?

I have both nodes listed as managed computers, as well as the virtual exchange name (virtual name is what clients need in order to connect to Exchange on a cluster). The reason I need the virtual machines listed as managed computers is so that I can run reports on my clusters. However, I am starting to think this might cause events to get skipped. Because sometimes an error or a warning will show up on the virtual machine, and not the node, or vice versa.

Contributed By: Chris Harris [MSFT]
If the Exchange product group has determined that the error can "safely be ignored" then the team that developed the MP for Exchange would not have included a rule to look for that event. No sense spamming those that are managing the MOM console.