The PTR check is a lot older than checking for SPF, DKIM, and DMARC. It's probably a 15+ year old MTA rule and you're getting blocked before Earthlink would even have the chance to check for authentication via DKIM or SPF. (And I'm not even sure if they do, personally.) So yes, DKIM/SPF matter, elsewhere, but that's not really germane to this Earthlink issue.
Regards, Al Iverson On Thu, Dec 14, 2017 at 10:42 AM, Michael Orlitzky <mich...@orlitzky.com> wrote: > On 12/14/2017 09:27 AM, Ryan Prihoda wrote: >> >> What about SPF, DMARC, DKIM ? I am sending 250k/day and only Earthlink >> seems to care. > > Out of the box, SpamAssassin will penalize you too: > > https://wiki.apache.org/spamassassin/Rules/RDNS_NONE > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- al iverson // wombatmail // miami http://www.aliverson.com http://www.spamresource.com _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
