In some complex migration scenarios involving merging of accounts using different migration products (QMM, EMW, DMW) the SELF permission may be missing from the Mailbox Rights on the target mailboxes. As a result target users will loose the ability to access their mailboxes after the SIDHistory cleanup. How can this be fixed?
The SID that was associated with the SELF permissions (NT AUTHORITY\SYSTEM) that was stored in the msExchMailboxSecurityDescriptor is invalid. This can be resolved in following ways:
Note: This will not remove permissions that existed prior to running command. The "/S" option above is case sensitive.
For additional information please refer to these Microsoft KB articles:
How to set Exchange Server 2003 and Exchange 2000 Server mailbox rights on a mailbox that exists in the information store - http://support.microsoft.com/kb/310866/en-us
How to set Exchange Server 2000 and 2003 mailbox rights at the time of mailbox creation - http://support.microsoft.com/kb/304935/en-us
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