Can't send email with certificate issue

Product Support Self-hosting
2

I managed to figure this out myself.
Settings below works for my situation.

  DISCOURSE_SMTP_ADDRESS: smtp.myquickid.synology.me
  DISCOURSE_SMTP_PORT: 25
  #DISCOURSE_SMTP_USER_NAME: admin@mydomain.com
  #DISCOURSE_SMTP_PASSWORD: "plainpass"
  DISCOURSE_SMTP_ENABLE_START_TLS: false           # (optional, default true)
  #DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none
  #DISCOURSE_SMTP_AUTHENTICATION: none
  DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none

Ignoring user name and password is weird though.