[Dovecot] Problems to sync

[Lincon Peretto]

Dovecot 1.1.2
Good afternoon,

I installed dovecot to work with Exim....my dovecot.conf is like this:

#Protocolos suportados
protocols = imap

log_path = /var/log/dovecot.log
info_log_path = /var/log/dovecot-info.log

#Desabilitar SSL
ssl_disable = yes
disable_plaintext_auth = no

first_valid_gid = 0

mail_location = mailbox:/usr/home/%u/mail/:INBOX=/var/mail/%u

mail_access_groups = mail

protocol imap {
login_executable = /usr/local/libexec/dovecot/imap-login
mail_executable = /usr/local/libexec/dovecot/imap
login_greeting_capability = yes
}

#Otimizacao
dotlock_use_excl=yes
maildir_copy_with_hardlinks=yes

auth_verbose = yes
auth_process_size = 256
auth_cache_ttl = 3600

auth default {
  mechanisms = plain
  user = root
  ssl_require_client_cert = no
  passdb pam {
  }
  userdb passwd {
  }
}

The problem is that I get to sync with INBOX, but I can't get to sync with
the other files...

I don't know if this line is correct:

mail_location = mailbox:/usr/home/%u/mail/:INBOX=/var/mail/%u

If I create a new file by the outlook, this file is created in the server
normally.....

If someone could help....thanks...