Incoming SMTP in the year 2017 and absence of DKIM

Bjørn Mork bjorn at
Thu Nov 30 09:22:40 UTC 2017

"John Levine" <johnl at> writes:

> Broken rDNS is just broken, since there's approximately no reason ever
> to send from a host that doesn't know its own name.

rDNS is not a host attribute, and will therefore tell you exactly
nothing about the host.


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