Licensees must set up anti-spam and anti-spoofing measures to authenticate the licensee’s mail server and to prove to ISPs, mail services and other receiving mail servers that senders are truly authorized to send the email. Examples of such measures include:
• SPF “Sender Policy Framework”;
• DKIM “Domain Keys Identified Mail”; and
• DMARC “Domain-based Message Authentication, Reporting and Conformance”.
Added: January 2022
