This datasheet outlines Proofpoint Secure Email Relay (SER), designed to protect cloud-based applications and third-party services that send emails on behalf of organizations. Traditional SMTP relays often lack security, leaving enterprises exposed to spoofing, phishing, and misdirected communications. SER ensures authentication with SPF, DKIM, and DMARC, safeguarding brand reputation and improving deliverability. It integrates with modern cloud apps and offers detailed visibility into message flows. By centralizing control and applying outbound filtering, Proofpoint SER reduces risks of compromised communications while maintaining regulatory compliance and trust in digital interactions.

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