user = {{ .Env.MYSQL_USER }}
password = {{ .Env.MYSQL_PASSWORD }}
hosts = {{ .Env.MYSQL_HOST }}
dbname = {{ .Env.MYSQL_DATABASE }}
query = SELECT CONCAT(mail_users.name, '@', mail_domains.name) AS email FROM mail_users JOIN mail_domains ON mail_users.domain_id = mail_domains.id HAVING email='%s'