Reconstruct Syntax Help

[ml at bortal.de]

Hello List,

 i am getting:
    IOERROR: opening 
/opt/foo/imap/spool/domain/foo/user/archive/2008/12/cyrus.header: No 
such file or directory

What is the syntax for reconstruct to fix this?

I tried:
   reconstruct -r user at foo
but i get "Mailbox does not exist".

Whats the syntax?

Thanks,
Mario