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Improving the Security of Electronic Mail: Updated Guidelines Issued by NIST



Shirley M. Radack


This bulletin summarizes the recommendations developed by NIST to assist organizations in designing, implementing and operating email systems that are secure. Topics covered in the bulletin include a description of the contents and the appendices of the guideline; the structure of email systems; and the use of cryptography to protect the confidentiality and integrity of email. NIST?s recommendations to organizations on planning and managing mail servers, securing the operating system, securing the mail client, using network protection mechanisms, and maintaining security are summarized.
ITL Bulletin -


Cryptography, electronic mail systems, email security, information security, information system standards, mail clients, mail servers, network security, operating system


Radack, S. (2007), Improving the Security of Electronic Mail: Updated Guidelines Issued by NIST, ITL Bulletin, National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 24, 2024)


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Created March 28, 2007, Updated January 27, 2020