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Domain Name System-Based Electronic Mail Security



Scott W. Rose, Karen M. Waltermire, Santos Jha, Chinedum Irrechukwu, William C. Barker


This document describes a security platform for trustworthy email exchanges across organizational boundaries. The project includes reliable authentication of mail servers, digital signature and encryption of email, and binding cryptographic key certificates to sources and servers. The example solutions and architectures presented here are based upon standards- based open-source and commercially available products.
Special Publication (NIST SP) - 1800-6
Report Number


Domain Name System, DNSSEC, DANE, electronic mail, email, encryption, digital signature, X.509, transport layer security protocol, TLSA, Secure/Multipurpose Electronic Mail Extensions, S/MIME, Internet


Rose, S. , Waltermire, K. , Jha, S. , Irrechukwu, C. and Barker, W. (2018), Domain Name System-Based Electronic Mail Security, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed July 13, 2024)


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Created January 15, 2018, Updated March 23, 2021