On Wed, Jul 19, 2023 at 12:27 AM Alessandro Vesely <ves...@tana.it> wrote:
> > How do you determine that an evaluator is enforcing DMARC "against > lists"? > > That assumes there are lists that don't munge From:. Is that real today? > I wasn't aware that this munging had become a standard, or even common. It's a popular solution to DMARC specifically, to be sure. > How can one definitively identify list traffic? > > Certainly not by List-* headers. In particular, List-Unsubscribe: seems > to be > required in most mail messages. > They may be common, but they are not required. > Also, I imagine that if munging is to be considered reversible, either the > > munging itself, or a way to describe it, needs to be standardized in some > > form. > > Hasn't that ship sailed already? > Can you please point me to the specification? -MSK
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