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What is the name of the DNS record that contains a list of users (IP addresses) who are authorized to send email on behalf of a domain?


SPF (Sender Policy Framework) is a method for preventing email address spoofing. It is accomplished through the use of a TXT entry in a domain's DNS service. DKIM (DomainKeys Identified Mail) serves a similar purpose, but it employs a digital signature. SPF or DKIM are used in Domain-Based Message Authentication, Reporting, and Conformance (DMARC), and the sender's domain must be the same as the DNS domain name. Domain administrators can specify whether emails that fail DMARC should be quarantined or rejected. To use DMARC, a DMARC record in the DNS must exist.

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