Each day I receive MANY SPAM messages from the domain internettrafficformulaa.com, which land in my Quarantine folder. I have SPAM filtering set to quarantine messages with a SPAM score of 1.9 or higher. I have blacklisted internettrafficformulaa.com yet the messages still land in my quarantine folder. The SPAM Score shows as N/A.
What can I do to effectively block internettrafficformulaa.com at the server? Are they spoofing the sender’s address?