It appears that Laura Atkins via mailop <la...@wordtothewise.com> said: >However, SPF breaks even with basic MTA relaying, nevermind mailing lists -- >unless the MTA is registered in the SPF record. >The delivery/re-post behavior of mailing lists not only breaks SPF but almost >always also breaks DKIM. (This latter point is >what motivated ARC.) > >Most modern mailing lists rewrite the 5321.from by default so they can bounce >handle. I don’t think SPF breaks mailing >lists as much as folks claim.
I would put it much more strongly than that. Every mailing list I have seen in the past 30 years rewrites the bounce address so it can handle delivery failures itself rather than sending them back to the original contributor who can't do anything about them. There are things that forward mail without rewriting the bounce address but I wouldn't call them mailing lists. SPF and mailing lists get along just fine. >It does break DMARC, but that’s another discussion. Yes indeed. R's, John _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
