Unfortunately, ADSP did not define what was meant by "discardable".
We said:
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.
Keeping in mind that senders cannot force receivers to do anything,
what else should we have said?
R's,
John
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