Ambari Email Notification

• Ambari web UI -> Alerts -> Actions -> Manage Notifications -> '+'
• Options
  • Gmail
    • Email To: Your@companyEmail.com
    • SMTP Server: smtp.gmail.com 
    • SMTP Port: 587 
    • Email From : yourGmailId@gmail.com
    • Use authentication: YES (checkbox) 
    • Username: yourGmailId@gmail.com
    • Password: $YOUR_GMAIL_PWD 
    • Start TLS: YES (checkbox) ==> MUST (when using gmail port 587)
    • Option
      • Turn on "Less secure apps" at google security settings
      • P.S. check your gmail inbox, it will show you how to configure "Less secure apps"
  • Postfix (ubuntu)
    • Prerequists
      • sudo apt-get install mailutils
      • Choose default settings
      • Test
        • echo "This is the body of the email" | mail -a "From: noreply@example.com" -s "This is the subject line" yourEmail@example.com
    • Email To: Your@companyEmail.com
    • SMTP Server: postfix.hostname.com 
    • SMTP Port: 25
    • Email From : noreply@example.com
• NOTE
  • Make sure the value of "From" is an allowed email address to be received
  • Check firewall configuration