After applying SP1, this warning pops up in the event log several times a
day now:

Event Type: Warning
Event Source: MSExchange ADAccess
Event Category: Validation
Event ID: 2161
Date: 2/27/2008
Time: 6:49:14 AM
User: N/A
Computer: EXCHANGE
Description:
Process edgetransport.exe (Transport) (PID=4440). Object CN=edited
out,CN=Folder Hierarchies,CN=First Administrative Group,CN=Administrative
Groups,CN=edited out,CN=Microsoft
Exchange,CN=Services,CN=Configuration,DC=edited out,DC=edited out,DC=com
read from edited out servername.com failed validation. Attribute:
PublicFolderTreeType. Error message: The value of property
'PublicFolderTreeType', 0, is not defined in the Enum type
'PublicFolderTreeType'.. Invalid data: 0.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

Not sure if it's related, but we do have an old Public Folder tree that was
used back when we were on exch2k3 but have since upgraded to 2k7 and decom'd
the old 2k3 server.

Any ideas?
Thanks.

Archived from group: microsoft>public>exchange>admin