On 17/May/10 11:47, Serge Aumont wrote:
"ADSP = discardable" means : "the domain encourages the recipient(s) to
discard it.". So a pretty MLM should discard thoses messages unless it
is able to brodcast it to subscribers without DKIM signature alteration.
"ADSP = all" does not recommend to drop thoses messages.
If think it would be an error to recommend that MLM handles "ADSP =
all" in the same way as they handle email with "discardable" domain. If
so "ADSP = all" will have a very poor difference with "ADSP =
discardable" a very very low number of domaines will use such ADSP policy.
The "l=" seems to be ignored by every DKIM users. It's interest is
really limited. My opinion is that we should not recommend its usage
because it is not MIME compatible. MIME is an very old standard
implemented by almost every mail products. "l=" tag is an hack in DKIM
introduced only for dirty MLM software that still ignore MIME and will
probably ignore DKIM for a long time ;-). It should be forgotten !
I see my messages get a dkim=pass for my signature when they come back
from the (few) mailing lists I'm subscribed to that don't remove
signatures, because of the "l=". That is to say, IME it works as
As for signing MIME messages, I agree DKIM is broken, because it is
legal to alter even the MIME preamble. The discussion on a
MIME-compatible canonicalization algorithm has been moved to ASRG, and
I look forward to going about it in the near future.
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