Unable to send test email: 553 authentication is required (4331231)

FIX 2

1. Download the enable_email_ehlo.xml and  import xml rule with following command. 
   
   [FMS_HOME]/bin/fglcmd.sh -cmd util:configimport -f /path/to/enable_email_ehlo.xml
   
   Refer to kb 255055 to get the enable_email_ehlo.xml file
2. Verify the email configuration in Administration | Email
   
   Important consideration:
   If there is any changes made to the Email configuration, you need to either
   a) wait for 10 mins or
   b) run the script below in the Administration | Tooling | Script console 
   
      import java.util.Date
      import javax.management.ObjectName;
      import com.quest.nitro.service.util.MBeanRef;
      def sb=new StringBuilder();
      def es = new MBeanRef(ObjectName.getInstance("com.quest.nitro:service=EmailSender")).ref();
      sender = es.getJavaMailSender();
      properties = sender.getJavaMailProperties(); properties.put("mail.smtp.ehlo", "true"); sender.setJavaMailProperties(properties);
      sb << sender.getJavaMailProperties();
3. Test configuration to send test email