Let's begin with a quick explanation of all three protocols that exist to enhance email security, prevent spoofing and phishing attacks, and improve the deliverability and reliability of email communication. Implementing them helps protect your sender's reputation and ensures that your emails are trusted by recipients and mail servers alike.
SPF (Sender Policy Framework): SPF is an email authentication protocol that allows domain owners to specify which mail servers are authorized to send email on behalf of their domain. By publishing SPF records in their DNS settings, domain owners can help prevent email spoofing and improve email deliverability by allowing receiving mail servers to verify the legitimacy of incoming emails.
DKIM (DomainKeys Identified Mail): DKIM is an email authentication method that adds a digital signature to the email header. This signature is generated using cryptographic techniques and can be verified by the recipient's mail server. DKIM helps verify the sender's authenticity and ensures that the email has not been tampered with during transit.
DMARC (Domain-based Message Authentication, Reporting, and Conformance): DMARC is an email authentication protocol that helps protect your organization's domain from being used for email spoofing, phishing, and other malicious activities. It allows senders to specify how email from their domain should be handled if it fails authentication checks, providing better visibility and control over email sent using their domain.
SPF Setup
DKIM Setup
DMARC Setup