On Tue Jun 10 12:31:47 2014, Professa Dementia wrote: > > On 6/9/2014 7:26 PM, Timo Sirainen wrote: > > I am not proposing a new standard, simply pointing out that breaking an > established protocol (by removing the [Dovecot] subject identifier) > because of a flawed anti-spam system is not in people's best interest. > > Can a spammer spoof messages from the list? Sure. Has it happened? > Not that I am aware of. Is it a problem? Not so far. > > So why, then, make people go through all this trouble of setting up new > filters and rules, mail routing, software upgrades, etc, just to appease > a standard that is clearly broken?
It's not DMARC that is broken, it is its application by AOL and Yahoo. (And it's not a standard yet, AFAIK.) It notes that the part "p=reject" should not be used in an environment where *people* send mail. DMARC works fine for paypal, amazon, etc.. As Yahoo and AOL have wilfully ignored this, my consequence is to ban addresses from domains that have "p=reject" from posting to our mailing lists. Yours Jost Krieger -- | jost.krieger+...@ruhr-uni-bochum.de Please help stamp out spam! | | Postmaster, JAPH, resident answer machine at RUB Comp. Center | | Sincere words are not sweet, sweet words are not sincere. | | Lao Tse, Tao Te King 81 |