[ Today is not my day for getting details right. Sigh. ] On 12/28/2017 11:57 AM, Jordan Brown wrote: > I've been running my mailing list for a few years with "Munge From" to > defend against DMARC rejection. This means that my messages get > > From: Joe User <mymailingl...@mydomain.com>
That should be From: Joe User via MyMailingList <mymailingl...@mydomain.com> > Reply-To: Joe User <j...@example.com> > > That mostly works, but sometimes confuses people a bit, and just now > I've had somebody send what I think was intended as a private address to Should be "... intended as a private message to ..." > that From line, not to the Reply-To line. (I think their e-mail client, > Pegasus, has an excessively flexible policy on which headers to use for > a reply and may be subtly misconfigured, but maybe they just naively > copied the From line.) > > That's leading me to wonder whether there's another way, whether I can > leave From alone and still get past the DMARC checks. Wikipedia tells > me that DMARC passes if either SPF *or* DKIM passes. There's no hope > for SPF with the original sender in From, because the mailing list > server isn't the user's mail server. However, DKIM seems like it > *might* pass, if I'm careful in how I configure the mailing list. In > particular, it looks like I'd have to get rid of the message footer. > That would be OK. Looks like I might also have to kill off the > [ListName] addition to the Subject, which is less OK but might be better > than the alternative. > > Before I go recruit a couple of users from several DMARC-using providers > and run some tests, can anybody tell me if there is any hope there, and > maybe share some configuration tips? ------------------------------------------------------ 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