How to set up Feishu's free SMTP service for your Discourse community

I am not entirely clear on how this issue arose, so I shall provide you with the SMTP configuration details from my app.yml file for your reference:

# WARNING the char '#' in SMTP password can cause problems!
  DISCOURSE_SMTP_ADDRESS: smtp.larksuite.com  #The SMTP server address
  DISCOURSE_SMTP_PORT: 587  
  DISCOURSE_SMTP_USER_NAME: system@starorigin.net   #Default Sending Email Address 
  DISCOURSE_SMTP_PASSWORD: abcdef   #The default SMTP password must be entered accurately.
  DISCOURSE_SMTP_ENABLE_START_TLS: true          
  #DISCOURSE_SMTP_DOMAIN: discourse.example.com    # (required by some providers)
  DISCOURSE_NOTIFICATION_EMAIL: system@starorigin.net    # (The default notification email address)