On Sat, 2016-07-30 at 22:54 +0200, Ángel González wrote: > On 2016-07-29 at 15:24 +0100, Patrick O'Callaghan wrote: > > > > It's tempting to think so, but there are also users with pacbell and > > bellsouth addresses who have similar problems. I note that both of them > > route their mail through prodigy.net, if that means anything. > > > > poc > > Apparently, prodigy.net email service is actually provided by yahoo; > https://en.wikipedia.org/wiki/Prodigy_(online_service)#A_public_company > > > So it is really just yahoo having problems with emails from their own > customers that passed through a mailing list.
OK, good sleuthing :-) > > I got the hint by the error message given by the prodigy mailserver > when attempting to spoof a yahoo From: > > > > <<< 554 5.7.9 Message not accepted for policy reasons. See > > https://help.yahoo.com/kb/postmaster/SLN7253.html > > 554 5.0.0 Service unavailable > > > I'm quite sure it is related to their DMARC reject policy (perhaps even > marked internally). Looks like it, however I don't understand why it's only affecting a very small number of users, and only occasionally. > It asserts that yahoo.com emails will only ever come from yahoo > servers, and non-complaint emails shall be *rejected*. This makes > complete sense for eg. paypal.com but for a free mail provider like > yahoo imho such policy is broken. Precisely because it completely > breaks mailing lists: > https://en.wikipedia.org/wiki/DMARC#Mailing_lists > > > Also, it should be noted that other providers may also be taking that > into account. For instance gmail accepts those DMARC-failing messages, > but they are sent to the Spam folder. My address (@usb.ve) is a Google Apps for Education account. I have another Gmail address on several Mailman lists. None of them has ever been affected by this. > There are a few options in recent mailman versions for handling this, > although none seems specially appealing: > https://wiki.list.org/DEV/DMARC I'll consider passing this on to the Gnome admins but it's seems likely they would already know about it. poc _______________________________________________ evolution-list mailing list evolution-list@gnome.org To change your list options or unsubscribe, visit ... https://mail.gnome.org/mailman/listinfo/evolution-list
