I can't configure SMTP in EC2 server

Hello! After install Virtualmin in a EC2 server I can receive and send emails from Usermin.

From email’s client (Thunderbird), I can receive (IMAP) but I can’t send (SMTP) emails. Can anybody help me?

Notes:

  • The user in Virtualmin > ‘Edit Users’ > ‘IMAP / POP3 / FTP login’ is ‘info.example’
  • I opened SMTP ports (25/465) from Amazon console. How can I check that they are open?

Incoming server (working):

  • Server Type: IMAP
  • Server Name: mx.example.org
  • Port: 143
  • Connection Security: None
  • Authentication Method: Password, transmitted insecurely
  • User Name: info.example

I tried the following outgoing server configurations:

  • Server Type: SMTP
  • Server Name: mx.example.org
  • Port: 25
  • Connection Security: None
  • Authentication Method: Password, transmitted insecurely
  • User Name: info.example

Changing ‘Server Type’:

  • Server Type: SMTP
  • Server Name: example.org
  • Port: 25
  • Connection Security: None
  • Authentication Method: Password, transmitted insecurely
  • User Name: info.example

Changing ‘Server Type’:

  • Server Type: SMTP
  • Server Name: smtp.example.org
  • Port: 25
  • Connection Security: None
  • Authentication Method: Password, transmitted insecurely
  • User Name: info.example

Changing ‘User Name’:

  • Server Type: SMTP
  • Server Name: mx.example.org
  • Port: 25
  • Connection Security: None
  • Authentication Method: Password, transmitted insecurely
  • User Name: info@example.org

Changing ‘Connection Security’:

  • Server Type: SMTP
  • Server Name: mx.example.org
  • Port: 465
  • Connection Security: SSL/TLS
  • Authentication Method: Normal password
  • User Name: info.example

Regards.

Anyone?

Here are the records: