Thanks. You've all given me much appreciated assistance. On Wednesday, April 20, 2016, Mark Sapiro <m...@msapiro.net> wrote:
> Mark Sapiro wrote: > > > There are two separate issues here. He cannot send to Mailman and > > Mailman can't send to him. The first causes him to get the rejections as > > above and the other causes Mailman's bounce processing to unsubscribe > him. > > > I partially misinterpreted the situation. I have received an off-list > message from the proprietor of the subject Mailman hosting service with > whom we have an excellent relationship (and he has now posted to the list). > > He has clarified a few things. The only messages that are bouncing are > the problem user's posts from the list back to him. He receives other > user's posts OK, and his posts are delivered to all the list members and > only the list post to him is bounced. > > It appears to me from what I now know and see that this is a pseudo > DMARC issue. The user's ISP, pphosted.com is saying that mail which has > a From: header domain which is "our domain" and To: a user in "our > domain" must come from our servers to be accepted. I.e., they don't > publish a DMARC policy, but when checking incoming mail on their own > servers they pretend they publish p=reject. > > This is not SPF per se. SPF deals only with the domain of the envelope > sender, not the From: header. > > Since pphosted.com doesn't publish a DMARC policy, you can't work around > this by setting dmarc_moderation_action. You can set from_is_list to > Munge From or Wrap Message and I'm sure that will allow these posts to > go through, but that is a heavy hammer which affects all list posts. > > Perhaps with this info, the user can talk again to pphosted and get an > intelligent response. This does not appear in any way to be an issue > with emwd.com's configuration. > > -- > Mark Sapiro <m...@msapiro.net <javascript:;>> The highway is for > gamblers, > San Francisco Bay Area, California better use your sense - B. Dylan > ------------------------------------------------------ > Mailman-Users mailing list Mailman-Users@python.org <javascript:;> > 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/rerobbins%40itinker.net > ------------------------------------------------------ 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
