On Thu, Apr 17, 2014 at 11:41 AM, MH Michael Hammer (5304) <[email protected]>wrote:
> > > 3. alignment domain-list value to include in alignment check: list of > domains > > the domain owner wants to have included in DMARC alignment check, > > complementing > > from: header domain; this will cover almost all cases DMARC breaks now, > > such as 3rd party infrastructure, mailing lists that do not wish to make > > changes for DMARC-compatibility, forwarders that process their mail, but > > can't be controlled by domain owner, etc. it's somewhat similar to SPF > > domain definition, but different, since it affects DMARC-alignment > process. > > > > This doesn't scale. How many domains would a large mailbox provider have > to include in the list to account for all domains subscribed to by their > users? How short would the TTL have to be in order to work for newly > subscribed to domains? Where would this list live? The DNS folks would > freak even if the list weren't too long to be put in a DNS record. > > It doesn't scale as a complete solution for mailing lists. I don't see any scaling problem for the case of a domain used by a single entity that wants to authorize a few service providers to send email on its behalf.
_______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
