Set to 'True' to enable the use of the STARTTLS command (if supported by the server) to switch the connection to a TLS-protected connection.
When the value for this setting is 'True', MSEMAIL_SERVER_CONFIG003 (PROTOCOL) (on page 1) must be set to 'smtp'.
Use the settings MSEMAIL_SERVER_CONFIG005 (on page 1) and MSEMAIL_SERVER_CONFIG006 (on page 1) to define the User ID and Password to access the SSL/TLS server.