Need assistance SMTP integration-BigPondGot a couple of problems with SMTP integration and Bigpond

[sharp kite]

Need assistance SMTP integration-BigPond (Australian ISP)
Got a couple of problems with SMTP integration and Bigpond email. Used to work but now failing.
When I enable username and password fields the notify service does reccognise email_peter. This is apparently a known problem. But I have not seen a fix.

Getting an unknown error when I activate service from Developer tools. Cannot see any log entries even with debug true. When activated from automation script get error <connect>.
configuration.yaml entry follows. What have I missed
notify:

• name: "email_peter"
  platform: smtp
  sender: "[e-mail]"
  recipient: "[e-mail]"
  server: "smtp.telstra.com"
  #username: !secrets bigpondemail_user
  #password: !secrets bigpondemail_password
  encryption: tls
  verify_ssl: false
  debug: true
  timeout: 30
  port: 465