This technical brief introduces Proofpoint Hosted Sender Policy Framework (SPF), a DNS service for Email Fraud Defense customers. It addresses common SPF challenges like query limits, excessive permissions, and DNS delays. Features include support for SPF macros, near real-time updates, and hidden authorized senders for security. The service is globally distributed across AWS regions with redundancy, load balancing, and proactive monitoring for high availability. With geolocation-based routing and MFA support, it ensures reliable enforcement of SPF policies, reducing spoofing risks while simplifying management for large enterprises.

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