On 10/18/2017 03:41 PM, Jordan Brown wrote: > On 10/18/2017 11:35 AM, Mark Sapiro wrote: >> DMARC is not the problem. It is perfectly reasonable for say, irs.gov >> to publish DMARC p=reject as long as mail From: irs.gov is not an >> employees personal post to an email list. Presumably the IRS would >> have rules against that. > > Would they? Shouldn't IRS sysadmins who use Mailman in the course of > their jobs send messages to this mailing list using their @irs.gov > addresses? > > Not all submissions to public mailing lists are personal use.
Agreed, but for DMARC to work seamlessly with pre-existing accepted norms, DMARC policies of reject or quarantine should only be published for domains that send "official" mail directly to end recipients. If irs.gov published such a policy (currently it publishes p=none) and IRS employees needed to post From: some irs.gov address, they could easily post From: @subdomain.irs.gov and publish p=none for that subdomain. However, all this is really moot because whatever any of us thinks, DMARC is already being used in ways that disrupt pre-existing accepted norms so for mailing lists to remain viable, they have to mitigate the effects in some way. -- Mark Sapiro <m...@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org