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
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