Hi,
"The European multi-stakeholder platform on ICT standardisation evaluated and gave a positive advice to the identification of the following technical specifications for referencing in public procurement: 'SPF-Sender Policy Framework for Authorizing Use of Domains in Email' ('SPF'), 'STARTTLS-SMTP Service Extension for Secure SMTP over Transport Layer Security' ('STARTTLS-SMTP') and 'DANE-SMTP Security via Opportunistic DNS-Based Authentication of Named Entities Transport Layer Security' ('DANE-SMTP') developed by Internet Engineering Task Force (IETF); [...] The evaluation and advice of the platform was subsequently submitted to consultation of sectoral experts who confirmed the positive advice to its identification."
"THE EUROPEAN COMMISSION, [...] HAS ADOPTED THIS DECISION: Article 1, The technical specifications listed in the Annex are eligible for referencing in public procurement."
For more details please see: http://eur-lex.europa.eu/ legal-content/EN/TXT/?qid=1515759784644&uri=CELEX:32017D2288
-- Best regards, Bart Knubben