user_query = \
  SELECT concat('maildir:/var/spool/virtual_mail/', mailbox,'/Maildir/') as mail, \
         concat('/var/spool/virtual_mail/', mailbox,'/') as home, \
         100 as uid, 102 as gid \
  FROM email \
  WHERE mailbox = '%u'

password_query = \
  SELECT mailbox as user, \
         boxpass as password \
  FROM email \
  WHERE mailbox = '%u'