SPF (Sender Policy Framework)
An email authentication protocol that specifies which mail servers are authorized to send email on behalf of a domain.
What is SPF (Sender Policy Framework)?
What is SPF (Sender Policy Framework)?
SPF is a DNS-based email authentication method. Domain owners publish an SPF record listing the IP addresses and servers authorized to send email for their domain. When a receiving mail server gets an email, it checks the sending IP against the SPF record. If it doesn't match, the email may be marked as spam or rejected. SPF works alongside DKIM and DMARC to form a complete email authentication system that prevents spoofing and phishing.
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