Question : Move mailbox failed from Exchange 2003 to 2007 - Event ID 8507

while moving mailbox from exchange 2003 to 2007, we are getting given below errors.

Event Type:      Error
Event Source:      MSExchangeIS Mailbox Store
Event Category:      Move Mailbox
Event ID:      8507
Date:            10/23/2008
Time:            6:46:14 PM
User:            N/A
Computer:      GGN01-MSG05
Description:
Unable to move mailbox ITSecurity Support.
 A problem occurred while getting the properties for a message.

 Parent folder name: Calendar; Message subject: IPM.Configuration.WorkHours; Error code: 0x80070057.

 Run ISINTEG to check for any problem in the database "Storage Group\Gurgaon".

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


AND

Server Support
Failed

Error:
Error was found for Server Support ([email protected]) because: Error occurred in the step: Moving messages. Failed to copy messages to the destination mailbox store with error: An unknown error has occurred., error code: -1056749164

Exchange Management Shell command attempted:
'domain.COM/Technology/Users/Server Support' | move-mailbox -TargetDatabase 'GGN01-MSG05\Storage Group\Gurgaon'

Elapsed Time: 00:01:10

I tried on 8 mailboxes and on 3 of them it has failed. so i have stopped the move operation because i don't know on how many this error is going to come.

Answer : Move mailbox failed from Exchange 2003 to 2007 - Event ID 8507

Ok since your mailboxes are still on E2k3 (why not export the entire calendar for the faulty mailbox) and then move the mailbox - its practically evident that the corruption lies some where in those calendar. We can sit back later, argue where the corruption was - but right now you have work to do.

My advise - you ExMerge / OL to take out the entire information from those mailboxes - delete the information (since you have all the info into PST by then). - Now try to move the mailbox.

Alternatively, i was thinking of using the move mailbox command with -BadItemLimit switch.

Move-Mailbox -identity "alias" -targetdatabase "E2k7 box\Database name" -BadItemLimit: "Specify any limit preferably between 1-100"