Incoming SMTP in the year 2017 and absence of DKIM

Eric Kuhnke eric.kuhnke at
Wed Nov 29 17:03:41 UTC 2017

For those who operate public facing SMTPd that receive a large volume of
incoming traffic, and accordingly, a lot of spam...

How much weight do you put on an incoming message, in terms of adding
additional score towards a possible value of spam, for total absence of
DKIM signature?

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