Mailbox or folder sizes are incorrect in Exchange System Manager 2003

When you try to move mailboxes, the operation is unsuccessful. The following event is logged in the Application Log:

Event Type: Error

Event Source: MSExchangeIS Mailbox Store

Event Category: General

Event ID: 1205

This issues occurs if the Microsoft Exchange Information Store cleanup process does not run.

SOLUTION

In Exchange 2003 computer you need create the Background Cleanup registry entry or the Track Duplicates registry entry.

1.  Click Start > Run.

2.  Type regedit, and then press ENTER.

3.  Locate the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\<ServerName>\Private-<MailboxStoreGUID>

4.  Create the below registry entry:

Registry entry name: Background Cleanup.

Value type: REG_DWORD.

Value data: 60000 (decimal) or 0xEA60 (hexadecimal)

5.  Create the below registry entry:

Registry name: Track Duplicates.

Value type: REG_DWORD.

Value data: 1

6.  Exit Registry Editor

7.  Perform the following task:
    
            ·         Restart the Microsoft Exchange Information Store service.