The one that stands out is "multipart/signed" (from RFC1847) which drops
to about a 65% survival rate. I don't know much about how this is
typically formatted or treated enroute, but it was easily the biggest
outlier in the report. Not sure if that should be a surprise to us or not.
I'm surprised. That suggests something often adds the S/MIME signature
after the DKIM signature, but as far as I know, S/MIME signatures are
usually applied by the MUA.
Do the stats say what kind of failure it was, e.g. body hash or header
hash?
Regards,
John Levine, johnl(_at_)iecc(_dot_)com, Primary Perpetrator of "The Internet for
Dummies",
Please consider the environment before reading this e-mail. http://jl.ly
smime.p7s
Description: S/MIME Cryptographic Signature
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