Problem with a mailbox

[Alessio Cecchi]

Hello all

i have a problem with a mailbox on a kolab server 2.1, the mailbox has been 
deleted and recreated, but now is "unavailable".

In the web interface i can see it, but of i send an e-mail to this address 
postfix return an error:

<alessandro at pippo.com>: service unavailable. Command output: Failed to
    set recipient: Mailbox unknown.  Either there is no mailbox associated 
with
    this name or you do not have authorization to see it. 5.1.1 User unknown,
    code 550

If i login on it via pop3:

groupware:~# telnet localhost 110
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
+OK groupware.pippo.com Cyrus POP3 v2.2.12 server ready
user alessandro at pippo.com
+OK Name is a valid mailbox
pass mypassword
-ERR [SYS/PERM] Unable to locate maildrop: Mailbox does not exist

If a login with webmail (squirrelmail) 

ERROR: Could not complete request.
Query: SELECT "INBOX"
Reason Given: Mailbox does not exist

How can I solve this problem? Delete and recreate the user is not enough.

Thanks
-- 
Alessio Cecchi is:
@ ILS -> http://www.linux.it/~alessice/
Assistenza Sistemi GNU/Linux -> http://www.cecchi.biz/
@ PLUG -> ex-Presidente, adesso senatore a vita, http://www.prato.linux.it