Email security - Post-quantum key exchange for MX deployments
UpdateUnverifiedAdded Sep 24, 2026
Cloudflare Email Security now supports post-quantum hybrid key exchange with X25519MLKEM768 on the SMTP connections we make to receive and deliver mail. Deploying Email Security in front of a provider that supports post-quantum hybrid key agreement (like Google Workspace) will create a TLS 1.3 connection using post-quantum key agreement.
Topics: Security
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