Mailbox does not exist for mailboxes with '.'

[Сергей Осипов]

>> In imapd.conf I have option "unixhierarchysep: yes".
>> If I create mailbox with char '.', for example 'test.test', Cyrus pop3d write to log:
>> Feb 24 22:35:07 pop3[22096]: login: XXXX.XXXX.ru [XXX.XXX.XXX.XXX] test.test plaintext User logged in
>> Feb 24 22:35:12 pop3[22096]: Unable to locate maildrop for test.test: Mailbox does not exist
>>
>> Cyrus IMAP write to log same string.
>>
>> If I create mailbox 'test_test', all works.
>> Why Cyrus server can't find mailbox ?

>unixhierarchysep: no

->> cyradm: cm user.firstnamelastname

>unixhierarchysep: yes

->> cyradm: cm user/firstnamelastname
>or                cm user/firstname.lastname
Big thanks for Alexander Dalloz, all works.

If I create mailbox via cyradm, it creates "user/test.test", but if I
create via socket of demon cyrus-imapd, it creates "user.user/test.test".
How I can create mailbox user/test.test via cyrus-imapd demon ?