How to create spam filter rule via Office 365 admin panel

Step 1: Login to the Office 365 admin panel and navigate to the Exchange admin centre (EAC)
Step 2: Go to ‘Mail flow’ and click on the ‘Rules’ tab.
Step 3: Click Add , and then select Create a new rule.
Step 4: Specify a name for the rule as per your wish.
Step 5: Click More options then, under Apply this rule if drop down select ‘The sender email id’.
Step 6: Now, a new window will be opened and enter the spam email address on the ‘check names’ field and click on the ‘Add’ button.
Step 7: Once you are done, choose the action such is ‘Reject, delete, etc..’ and save the rule