Help Debugging SMTP platform failure

Configuration
3

I don’t know if this will help you, but this is a working gmail example:

notify:
  - name: sendemail
    platform: smtp
    server: smtp.gmail.com
    port: 587
    timeout: 15
    sender: [email protected]
    starttls: true
    username: [email protected]
    password: mypassword
    recipient:
      - [email protected]
    sender_name: Home Assistant