Recreated Mailbox & NK2 File Troubles

A mailbox was recreated in Exchange 2010. Now multiple senders, internal and external, can no longer send using the Autocomplete (NK2 file) and they get NDR's. Is there a way to fix this at the server rather than try to track down all senders?
jconklin-ansinc-netAsked:
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_-W-_Commented:
grab the NK2 file from app data on local machines and replace the new NK2 (use same name as new inbox)
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MAS (MVE)Technical Department HeadCommented:
create an X500 addresss for the recreated mailbox using the old legacyExchangeDN value for the address
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jconklin-ansinc-netAuthor Commented:
_-W-_:
grab the NK2 file from app data on local machines and replace the new NK2 (use same name as new inbox)
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This is from external users, also. It's easy enough to have them delete the auto entry (well, not with some users) but locating them all is the problem.
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