On Sun, Mar 09, 2025 at 08:50:17AM +0200, Petko Manolov via Postfix-users wrote:
> On 25-03-08 13:05:42, Peter via Postfix-users wrote:
> Well, i maybe seeing only in black and white, but if somebody is careless
> enough
> to not set SPF and DKIM, they pretty much asked for it. These mechanisms are
> in
> place to help fighting spam, after all. So yeah, i hear what you say and it
> looks that i'll have to adapt my anti-spam strategy based on the feedback i
> get
> from the logs.
No, DKIM is not an anti-spam mechanism, it is an optional origin
authentication mechanism, that can be helpful in applying reputation (be
it positive or negative) to incoming mail that may have been relayed
without material modification. And DMARC is far from universal, and
even when deployed, the policy is often permissive.
--
Viktor.
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