Re: procmail, was autoresponding to Yahoo DMARC breakage

All this talk about procmail leads me to ask: - has anybody come up with a procmail recipe, or other mechanism to validate DKIM-signed mail and apply an Original-Authentication-Results header, at the MTA level? - if so, does it work with Yahoo mail directed to mailing lists? - if yes, can you share?! (So far, all the folks I know who are trying to react, have been doing so via hacks to their list management software. I'm hoping to attack the problem at a more accessible step in mail processing). -- In theory, there is no difference between theory and practice. In practice, there is. .... Yogi Berra