[Dovecot] Dict-server mysql module error

[Gabriele Fergola]

hi all
when i setup plugin quota by quota = dict: mysql:/etc/quota-dict.conf i get
the folowing error:

deliver(zzzz at zzzz.zz): Unknown dict module: mysql
deliver(zzzz at zzz.zz): dict quota: dict_init() failed

quota-dict.conf:

connect = host=localhost dbname=zzzz user=zzzz password=zzzz
table = mailbox
select_field = quota
where_field = maildir
username_field = username

dovecot.conf:
# 1.0.2: /etc/dovecot//dovecot.conf
base_dir: /var/run/dovecot/
protocols: imap pop3 imaps pop3s
ssl_disable: yes
disable_plaintext_auth: no
shutdown_clients: no
login_dir: /var/run/dovecot//login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
first_valid_uid: 5000
mail_location: maildir:/mbox/%d/%u/Maildir
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(pop3): quota
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
pop3_uidl_format(default):
pop3_uidl_format(imap):
pop3_uidl_format(pop3): %08Xu%08Xv
auth default:
  passdb:
    driver: pam
  passdb:
    driver: sql
    args: /etc/dovecot-sql.conf
  userdb:
    driver: passwd
  userdb:
    driver: sql
    args: /etc/dovecot-sql.conf
  socket:
    type: listen
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
      user: vmail
      group: mail
plugin:
  quota: dict:storage=10240:messages=1000 mysql:/etc/dovecot-dict-quota.conf
  quota_warning: storage=80% /usr/local/bin/quota_warning.sh 80
dict:
  quota: mysql:/etc/dovecot-dict-quota.conf

i applied the patch for quota warning message by nicolas.

thank you in advance
Workino