Exchange 2003 Hard deleted messages

I have an Exchange Server 2003 and i have the option to keep deletes messages and emails accounts for 30 days.
One user which using outlook 2010 has hard deleted all the messages with attachment more than 100KB.
The problem is that he did not delete them from a specific folder but from the shortcut "large mails".

Unfortunately backup is not working.
I tried to use "recover deleted items" but there is nothing in there.

How can i retrieve these hard deleted files?
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Mark DamenERP System ManagerCommented:
You do need to recover the mailbox from backup - after they have been hard deleted, they no longer exist in the database.

If you have an outlook client configured in cached mode that hasn't updated since the deletion, then you could disconnect that client and open outlook and export the mailbox contents to PST.  Then import back into the online mailbox - long shot this one, but a possibility.

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AmitIT ArchitectCommented:
If items are no present in recover deleted items, then only option left is to restore from backup. What is the issue with backup? What is not working?
DyktioAuthor Commented:
The only solution is to restore from old backup.
This is what i will do.
Mark DamenERP System ManagerCommented:
I feel you should have accepted by answer - it was posted way before the accepted answer, and more descriptive.
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