[dmarc-ietf] BATV

[Douglas Foster <[e-mail]>]

I would like to see John Levine's BATV document revived from expired draft
status
https://datatracker.ietf.org/doc/html/draft-levine-smtp-batv

BATV is in use within the current mail stream, and one commercial product
has cloned it to make a proprietary version of the same idea, so it is time
to declare it a success.  More importantly, it provides a general
technique, based on signature and timestamp, which permits private
communication between MTAs using insecure RFC5322 header fields.  That
technique has other uses.

For example, A-R does not include a signature security mechanism, so
implementers must be concerned about injection of spoofed A-R records.
 Because ARC is dependent on the secure transmission of A-R within one
organization, weak A-R also weakens ARC.  Both problems would have been
avoided by using the BATV signature system, but expired drafts make poor
reference documents for other RFCs

Doug