>This is one of the reasons that I raised the question of whether it >is possible to find the "base" domain (not TLD) that the organization >controls.
You can't. There's nothing in the DNS that lets you determine what organization is responsible for what entries. Some people claim you can do it from zone boundaries but for a variety of reasons they are mistaken. > If this is not possible to do then I don't know that non-existent > sub-domains can be protected by DKIM/ADSP. Right. Hence my suggestion that we not try, and just remind people that non-existent domains are an issue they can already deal with if they want to. R's, John _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
