If SPAM is received by one email address you can add this to the blacklist.
Log into your cPanel under "Hosting" -> "Hosting (cPanel)" and go to "SPAM Filters" in the Section "Email"
There look for "Additional Configurations (For Advanced Users):" at the bottom of the page and click "Show additional configurations".
Now choose "Edit Spam Blacklist Settings" and "Add A New 'blacklist_from' Item"
Enter the Email address and then click "Update Blacklist(blacklist_from)" to save.
Now you should no longer receive emails from that sender address.
domaindiscount24 Help Centre