I'm received the Event indicated below. My environment is a mixed 2003/2007 exchange environment since I am in the middle of a migration. This even started on a random day when I was on vacation so I have no idea what triggered it:
On the new 64bit Windows Server 2008 / Exchange 2007 Server the following repeats every minute
"A message deliver to public folder store "Second Storage Group\Public Folder Database" with message class REPORT.IPM.NOTE.NDR is being dropped. "
My searches have not turned up anything useful.
Log Name: Application
Source: MSExchangeIS Public Store
Date: 4/3/2009 11:35:32 AM
Event ID: 2091
Task Category: Transport Delivering
A message deliver to public folder store "Second Storage Group\Public Folder Database" with message class REPORT.IPM.NOTE.NDR is being dropped.
<Provider Name="MSExchangeIS Public Store" />
<TimeCreated SystemTime="2009-04-03T15:35:32.000Z" />
<Data>Second Storage Group\Public Folder Database</Data>