Find out what type of data about blocked emails you can see on the console of HES.
When you search mail tracking logs, the Blocked Traffic tab on the HES console lists the email traffic blocked by Email Reputation Services (ERS) or the HES/HES - Inbound Filtering Denial-of-Service (DoS) monitor.
To know more about the types of data displayed for blocked traffic, refer to the following topic: About the Blocked Traffic Tab in the HES Online Help page.