How to reset mailboxes for a user

[sam wun]

Hi,

I m using Cyrus-imap 2.2 with SASL2 enabled in FreeBSD 5.3
I created an email account with false mailboxes. I probalby have messed 
up the folders. At the end, I deleted this email account with its folders.
However when I recreate this user email acount, and assigned folders 
(Sent, Trash, Drafts) to it, the email client (which login the IMAP port 
143) does not see all these folders.

Is there any way or any tools I can use to refresh the mailbox for a 
user account?

Thanks
Sam

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