On 4/29/2014 6:29 AM, Mikael Abrahamsson wrote:
So... just because this is a hard problem to solve doesn't mean it's a good idea to just gloss over it and say "screw it" for mailing lists.
A counter-argument is the classic "Don't let perfect be the enemy of good". DMARC works well for a very popular -- albeit very constrained -- scenario.
For any mechanism, there is always the possibility that someone will apply it for scenarios beyond what was originally envisioned. Often that is a large benefit. Often is not always.
The distinctive issue now is that that extension is being done by very large players. The phrase "Too big to ignore" has been rattling around in my brain for the last few weeks...
d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net