 Sender Policy Framework

Sender Policy Framework (SPF) is an email authentication protocol designed to prevent email spoofing, which is a common technique used by spammers and phishers to send fraudulent emails that appear to come from legitimate sources. SPF allows domain owners to specify which mail servers are authorized to send emails on behalf of their domain. ### Key Concepts of SPF: 1. **DNS Records**: SPF relies on Domain Name System (DNS) records.