> On Dec 18, 2016, at 9:52 PM, Brian E Carpenter <brian.e.carpenter@xxxxxxxxx> wrote: > > > Yes, but *today* as an IETF list admin I don't have that choice. Objectively > I have exactly two choices: advise the user to change email provider, or rewrite > the From for every single subscriber. I'm not happy with that choice, but unless > somebody in the IETF's IT support does something, that is the choice I have. A third choice is to configure the list to neither add footers, nor modify the subject line. At which point you're no longer breaking DKIM signatures, and DMARC passes. -- Viktor.