%% You should probably cite draft-ietf-uta-mta-sts instead of this I-D. @techreport{brotman-mta-sts-00, number = {draft-brotman-mta-sts-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-brotman-mta-sts/00/}, author = {Daniel Margolis and Mark Risher and Nicolas Lidzborski and Wei Chuang and Brandon Long and Binu Ramakrishnan and Alex Brotman and Janet Jones and Franck Martin and Klaus Umbach and Markus Laber}, title = {{SMTP MTA Strict Transport Security}}, pagetotal = 17, year = 2016, month = apr, day = 25, abstract = {SMTP MTA-STS is a mechanism enabling mail service providers to declare their ability to receive TLS-secured connections, to declare particular methods for certificate validation, and to request that sending SMTP servers report upon and/or refuse to deliver messages that cannot be delivered securely.}, }