Hello,

While I migrating users I noticed that one don't have a database, and there is also an error in ecp :

The object domain.com/Users/SystemMailbox{0C5E1178-A163-4991-8A37-72184E7F53FB} has been corrupted, and it's in an inconsistent state. The following validation errors happened:

Database is mandatory on UserMailbox.

Also I have 5 System Mailbox??!! Do I need all of them? If not how and which to delete.

Thank you for help

• Edited by Vjeko Saturday, July 11, 2015 8:59 PM errors

Hi vjeko,

Thank you for your question.

I agree with David.

We could refer to the following steps to perform it:

1.        Run ADsiedit.msc in RUN
2.        Then connect to Default naming context->Users->SystemMailbox {0C5E1178-A163-4991-8A37-72184E7F53FB}
3.        Then right click property->homeDB
4.        Then you could refer to David solution

Notice: we should backup AD database before we modify it.

If there are any questions regarding this issue, please be free to let me know.

Best Regard,