Rose, S.
, Barker, W.
, Jha, S.
, Irrechukwu, C.
and Waltermire, K.
(2017),
Domain name system-based electronic mail security:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.1800-6
(Accessed August 31, 2024)