Permission denied on a MaillBox

[Riccardo Riva]

Hi all,

i have a Cyrus Server on which an admin had deleted the unix user 
(biinded to a mailbox) but not the mailbox.
At this moment i'm not able to delete the mailbox using cyradm because 
when I'm trying to do dm user.xxxx I have the follow :

deletemailbox: Permission denied

If I try to set acl again on the mailbox, I'll have :

setaclmailbox: cyrus: lrsiwpcda: System I/O error

what can I do to delete that mailbox ?

I've just even try to reconstruct to mailbox using

/usr/lib/cyrus/bin/reconstruct -rfx "user.mailbox"

but without any results.

Thanks in advance

Riccardo