----- Original Message ----- > From: "Joseph Humphreys" <jhumphr...@salesforce.com> > To: dmarc@ietf.org > Sent: Friday, April 18, 2014 10:04:08 AM > Subject: Re: [dmarc-ietf] alignment and parsing logic as optionals > > On Fri, Apr 18, 2014 at 4:50 AM, Murray S. Kucherawy > <superu...@gmail.com> wrote: > >> > >> The alignment domain-list solution seems trivial to me, and it works > >> without active support from the sender, which is nice. > > > > > > How does it work without active support from the sender? Doesn't the > > sender > > first have to ensure it's in that list? That's kind of an important step > > for a list operator with a new subscriber from a "p=reject" domain. > > > > Again, I have not been proposing this as a solution for mailing lists. > It solves at least two other problems: third-party bounce handlers, > and using your own domain with some large mail providers like gmail. > In either case, the domain owner can use DMARC without requiring any > support from the sender. This is not theoretical -- we have customers > who are currently stalled on DMARC implementations and who could move > forward if this were included in the spec. > > If you are willing to accept additional DNS lookups, you actually > could use this to alleviate the mailing list problem, just by adding > an include syntax for aligned domain lists. That would create a > mechanism for people to make public, curated MLM whitelists. I > hesitate to bring that up because I imagine some people won't like the > idea of more DNS lookups, and I don't want the entire idea to get shot > down by association. >
Not delving in the details, but I may be off base... It seems this solution is akin to have to add to your SPF record the whole of Google cloud or Salesforce cloud, with a "trust us" we don't allow any of our other members to send email on your behalf on any of our applications... https://dmarcian.com/spf-survey/google.com 212,996 authorized individual IPv4 addresses https://dmarcian.com/spf-survey/salesforce.com 228,934 authorized individual IPv4 addresses I prefer that 3rd parties relay our mail mail through our servers. _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
