driver = mysql
connect = host=<SQL_HOST> dbname=<SQL_DB> user=<SQL_UNPRIVILEGED_USER> password=<SQL_UNPRIVILEGED_PASSWORD>
default_pass_scheme = CRYPT
password_query = "SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid, CONCAT('*:storage=', quota,'M') AS userdb_quota_rule FROM mail_users WHERE username = '%u' OR email = '%u'"
user_query = "SELECT CONCAT(homedir, maildir) AS home, uid, gid, CONCAT('*:storage=', quota,'M') AS quota_rule FROM mail_users WHERE username = '%u' OR email = '%u'"