Redmine

Hello everyone, i have a problem with my SMTP configuration :

default:
  email_delivery:
    delivery_method: :smtp
    smtp_settings:
      enable_starttls_auto: true
      address: "smtp.mydomain.fr" 
      port: 587
      domain: "mydomain.fr" 
      authentication: :plain
      user_name: "myadress@mydomain.fr" 
      password: "xxxx" 

When i try to change default in production, redmine not detect my configuration.
I'm not sur for field adress (smtp.mydomain.fr). Where i found this ?

You see an error ?