On 10/31/2018 11:09 AM, John Levine wrote:
Gmail, Yahoo, and AOL all add Authentication-Results headers to incoming mail.
As does open-source MTA software, apparently including sendmail. My copy of John's response contained: > Authentication-Results: simon.songbird.com; dkim=pass
reason="1024-bit key; unprotected key" header.d=ietf.org header.i=@ietf.org header.b=zbjsA0UV; dkim-adsp=none (unprotected policy); dkim-atps=neutral
d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net
