Sorry, but this is just wrong. DMARC and the tree walk have nothing, and I
emphasize nothing, to do with zone cuts.
I thought a zone cut marked the boundary where an organization delegates
control to another one.
No, it's the place where one set of name servers delegates part of their
DNS t
On Fri 29/Jul/2022 19:44:28 +0200 John Levine wrote:
It appears that Alessandro Vesely said:
In general, it is not possible to determine DNS zone cuts by querying
various subdomains. However, DMARC users define DMARC records at their
Organizational Domain, so it is possible to
