[Dovecot] Problem with polish characters and sieve fileinto

[l.chelchowski at eurocar.pl]

Hi,

I have problems with sieve fileinto and polish characters in folder names:
# rule:[ąćęłńóśźżĄĆĘŁŃÓŚŹŻ]
elsif anyof (header :contains "Subject" "ąćęłńóśźżĄĆĘŁŃÓŚŹŻ")
{
     fileinto "INBOX/&AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-";
}


dovecot log:
Apr  5 15:17:42 mailer dovecot: lmtp(54203, test at test1.com): 
rmHVJHabfU+70wAA9hAjDg: sieve: msgid=<4F7D9B68.4030206 at test2.com>: 
stored mail into mailbox 'INBOX'
Apr  5 15:17:42 mailer dovecot: lmtp(54203, test at test1.com): Error: 
rmHVJHabfU+70wAA9hAjDg: sieve: execution of script 
/home/vmail/test1.com/test//.dovecot.sieve failed, but implicit keep was 
successful (user logfile /home/vmail/test1.com/test//.dovecot.sieve.log 
may reveal additional details)
Apr  5 15:17:42 mailer postfix/lmtp[54202]: 941B1E2681F: 
to=<test at test1.com>, relay=m.test1.com[private/dovecot-lmtp], 
delay=0.04, delays=0/0.01/0/0.03, dsn=2.0.0, status=sent (250 2.0.0 
<test at test1.com> rmHVJHabfU+70wAA9hAjDg Saved)


dovecot.sieve.log:
sieve: info: started log at Apr 05 15:17:42.
error: msgid=<4F7D9B68.4030206 at test2.com>: failed to store into mailbox 
'INBOX/&AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-' 
(INBOX/&-AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-): Mailbox 
doesn't exist: INBOX.&-AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-.

Thanks for help.
-- 
Pozdrawiam
Łukasz