Net::ReadTimeout when sending email after install

[gpson]

The Problem

I get the error on first registration:

tail -f /var/discourse/shared/standalone/log/rails/production.log
Sent mail to robotas@magveda.lt (61113.9ms)
Job exception: Net::ReadTimeout

What I tried

• I received the test email successfully using python code provided in Troubleshoot email on a new Discourse install - #113

• I checked all options in Troubleshoot email on a new Discourse install - #113 without success

• Tried different email accounts, then ./launcher rebuild app and I get the same error

The question

• What more can I do?
• Is it possible to increase the verbosity of the error?

My containers/app.yml :

  ## TODO: List of comma delimited emails that will be made admin and developer
  ## on initial signup example 'user1@example.com,user2@example.com'
  DISCOURSE_DEVELOPER_EMAILS: 'robo@magved.lt'

  ## TODO: The SMTP mail server used to validate new accounts and send notifications
  DISCOURSE_SMTP_ADDRESS: pap.serveriai.lt
  DISCOURSE_SMTP_PORT: 465
  DISCOURSE_SMTP_USER_NAME: robo@magved.lt
  DISCOURSE_SMTP_PASSWORD: topsecret
  DISCOURSE_SMTP_ENABLE_START_TLS: true           # (optional, default true)
  DISCOURSE_SMTP_AUTHENTICATION: plain
  #DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none

[zogstrip]

Can you manually (via telnet or similar) send an email from the server using the same credentials?

[gpson]

It is working with these parameters (PORT - 587, AUTHENTICATION - “login”):

  ## TODO: The SMTP mail server used to validate new accounts and send notifications
  DISCOURSE_SMTP_ADDRESS: pap.serveriai.lt
  DISCOURSE_SMTP_PORT: 587
  DISCOURSE_SMTP_USER_NAME: robo@magved.lt
  DISCOURSE_SMTP_PASSWORD: topsecret
  DISCOURSE_SMTP_ENABLE_START_TLS: true           # (optional, default true)
  DISCOURSE_SMTP_AUTHENTICATION: "login"
  DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none

Email provider gave wrong port and authentication parameters.