Not send mail test Administration > setting > email notifications > send email test

my configuration.yml file has the following content

 production:
   email_delivery:
     delivery_method: :async_smtp
     smtp_settings:
       tls: true
       enable_starttls_auto: true
       address: "smtp.gmail.com"
       port: 587
       domain: "mydomain.com"
       authentication: :plain
       user_name: "mymail@mydomain.com"
       password: "mypassword"

I am trying to send test mail to see if email notifications are active

In my droplet install postfix following the Help guide

In order to help you with this you will need to provide more information:

• Is this a self built application or something pre-built? If it’s something pre-built, let us know what software you are using.

• What mail server (MTA) have you installed on your droplet and what steps did you take to configure it.

• What errors if any are you seeing in your mail logs on this droplet?

• Are you attempting to send mail to a domain that is configured on this droplet?