driver = mysql
connect = host=127.0.0.1 dbname=postfix user=postfix password=postfix-password
default_pass_scheme = MD5-CRYPT
user_query = SELECT '/srv/vmail/%d/%n' AS home, 3000 AS uid, 3000 AS gid, CONCAT('*:bytes=', CAST(quota AS CHAR)) AS quota_rule FROM mailbox WHERE username = '%u' AND active='1'
password_query = SELECT password FROM mailbox WHERE username = '%u'