Siniša Burina writes: > Basically, Yahoo insists that their own mail servers are the only > ones that can originate the message with @yahoo.com domain in the > From header. Not Return-Path, Not the envelope sender, but exactly > the From header in the message itself. If this practice gets > adopted by more organizations, I don't know how else could this > problem be solved.
If yahoo wants to give their users an excuse to use a different address and stop advertising yahoo, I have no problem with that. :-) The straightforward thing for Mailman to do is to wrap mail from yahoo addresses in a multipart/mixed with a text part explaining that Yahoo is "knowingly interfering with" the mail service of their users, and the mail itself in a message/rfc822 part. As far as I know, no component of DMARC allows digging into a message and trying to DMARC the MIME parts. Or just bounce them with a message stating that Yahoo no longer permits its users to post to mailing lists, so please use a different posting address. I realize that most sites can't do that, but mine can (and will if I get any complaints about this policy -- my subscribers are sympathetic). Steve ------------------------------------------------------ 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
