[ietf-dkim] discardable, was Last Call: <draft-ietf-dkim-mailinglists-10.txt> (DKIM And Mailing Lists) to BCP
John R. Levine
johnl at iecc.com
Mon May 16 05:22:26 PDT 2011
>> I'd propose to put this item ('writeup a definition of 'discardable') on
>> the to-do list of a successor of RFC5617, if there ever will be one. Or
>> on another future 'policy' document.
RFC 5617 has a perfectly good definition of discardable:
All mail from the domain is signed with an
Author Domain Signature. Furthermore, if a
message arrives without a valid Author Domain
Signature due to modification in transit,
submission via a path without access to a
signing key, or any other reason, the domain
encourages the recipient(s) to discard it.
I realize there are people who wish it meant something else, typically
simultaneously saying "this mail is very important" and "throw this mail
away", which is absurd, or perhaps "if there's no signature, handle it
based on some complicated set of instructions of no benefit to the
receiver, even though the apparent sender probably isn't the actual
sender, because the message is so very important".
The definition in the RFC was hammered out after a great deal of debate,
and I see no evidence that the definition is defective. ADSP has plenty
of problems, but the definition of discardable isn't one of them.
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly
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