© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022
L. E. HughesPro Active Directory Certificate Serviceshttps://doi.org/10.1007/978-1-4842-7486-6_12

12. S/MIME Secure Email

Lawrence E. Hughes1  
(1)
Frisco, TX, USA
 

Years ago, there were a variety of incompatible schemes for attaching files to emails. The IETF created a standard for email attachments which is now universally used, not just in email, but in web pages and other places. It is called MIME. It is specified in several RFCs.

MIME

RFC 2045, “Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies,” November 1996

RFC 2046, “Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types,” November 1996

RFC 2047, “Multipurpose ...

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