> DKIM-Delegate does not need or use any externally-maintained list.

please, solve this spoofing example:

1. so, a sender sends DKIM-D with every email, regardless whether
   it is meant for a mailing list or not, cause they maintain no
   whitelist to make a difference,

2. sender sends an email to me. mind u, i'm not a mailing list.
   sender added me in DKIM-D "t=" tag [there's no whitelist,
   so any receiver is a candidate, whether defined by "t=" or
   implicitly],

3. i see there's DKIM-D in ur email, i copy it for my message, sign
   that message using my DKIM [i AM a delegated entity], and
   send away an email satisfying DKIM-D profile, caring whatever
   i'm interested transmitting to my victims.


or am i missing something?
a whitelist, perhaps?

this is a common issue with any weak DKIM.


-- 
Vlatko Salaj aka goodone
http://goodone.tk

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