driver = mysql
connect = host=127.0.0.1 dbname=db_mail user=postmaster password=xxxxxxxx
default_pass_scheme = SHA512-CRYPT
user_query = SELECT ('5000') as 'uid',('5000') as 'gid'
password_query = SELECT CONCAT(user.user, '@', domain.name) AS user,user.password FROM user,domain WHERE user.domain_id=domain.id AND CONCAT(user.user, '@', domain.name)='%u'