On 16 April 2014 19:41, Murray S. Kucherawy <superuser@xxxxxxxxx> wrote:
whitelist or a private one. Are we certain, though, that it's flatly impossible to adjust lists in such a way that their traffic could be described by these mechanisms?
If you mean, can we change mailing lists such that they're describable by DMARC without any change in behaviour, whilst maintaining the essential premises of mailing lists, then I don't see a mechanism that would allow this.
If you mean, can we change DMARC (such that existing deployments will have to change) such that a modified mailing list model (that handles the existing use cases of mailing lists) would be describable, then I think that's entirely possible.
Unfortunately, the only option I thought was possibly available isn't permissible by the specification - therefore, the only solution involves alterations to the deployed base, which has been ruled impossible for over a year now.
Dave.