SPF (Sender Policy Framework): This record specifies which IP addresses are allowed to send emails on behalf of your domain. It helps in reducing spam by verifying the sender's IP address. DKIM (DomainKeys Identified Mail): This record adds a digital signature to your emails, allowing the recipient's mail server to verify that the email was indeed sent by your domain and has not been tampered with. DMARC (Domain-based Message Authentication, Reporting, and Conformance): This record instructs receiving mail servers on how to handle emails that fail SPF or DKIM checks. It provides an additional layer of security and reporting.