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