For information, I have solved the problem with :

prefix=INBOX. imapc_list_prefix=INBOX

Seen on recent thread « Problem migration from cyrus with imapc », thanks Timo.

Sylvain

2013/11/25 Sylvain <debian.roxx@gmail.com>

Hi !

I have an old Courier IMAP and in front of it, I have put a proxy cache with the great Dovecot.

SOGo webmail is connected to the proxy and works great (very very more fast) but I have a problem with Thunderbird : mailbox with « SPECIAL USE » aren't automatically detected. To make that works, I must :

• in Dovecot : define the namespace inbox : « prefix = » and « separator = . »
• in Thunderbird : force in the account, the personal namespace to "INBOX." and untick « Allow server to exceed namespace » (sorry : personal translation :D).

If I define in the namespace inbox as the dovecot wiki said : « prefix = INBOX. » and « separator = . », TB see a sub-folder INBOX and mailbox with special use aren't automatically detected. :-( I must have forgotten a parameter in my Dovecot configuration but I don't see it.. Can you have a look please ? Here my configuration :

2.1.7: /etc/dovecot/dovecot.conf

OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.2

auth_debug_passwords = yes auth_mechanisms = plain login disable_plaintext_auth = no first_valid_uid = 100 imapc_host = xxxxxx mail_gid = imapproxy mail_home = /var/local/cache/dovecot/%1Mu/%1.1Mu/%u mail_location = imapc:~/imapc mail_uid = imapproxy namespace inbox { inbox = yes list = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = separator = . type = private } passdb { args = host=xxxxxx port=143 default_fields = userdb_imapc_user=%u userdb_imapc_password=%w driver = imap } protocols = imap ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = prefetch }

Sylvain