Drag the actions into the correct sequence to validate email authenticity on a Cisco Secure Email Gateway by using DNS records. <DragDrop items={["Choose Default Policy Parameters.","Set SPF/SIDF Verification to On.","From the Mail Policies menu, select Mail Flow Policy.","Open the Security Features section."]} slots={[{"answer":"From the Mail Policies menu, select Mail Flow Policy.","id":"step1","label":"step 1"},{"answer":"Choose Default Policy Parameters.","id":"step2","label":"step 2"},{"answer":"Open the Security Features section.","id":"step3","label":"step 3"},{"answer":"Set SPF/SIDF Verification to On.","id":"step4","label":"step 4"}]} explanation={"SPF/SIDF verifies sender authorization by consulting DNS records. Cisco Secure Email Gateway enables it in the default mail-flow policy’s Security Features section after navigating through Mail Policies > Mail Flow Policy.\n\n**Learn more:** [Cisco Secure Email Gateway User Guide – Email Authentication](https://www.cisco.com/c/en/us/td/docs/security/esa/esa13-5-1/user_guide/b_ESA_Admin_Guide_13-5-1/b_ESA_Admin_Guide_12_1_chapter_010110.html)"} reuse={false} />