On 10/22/2015 8:27 PM, John R Levine wrote: >> >> the effort is nascent. the specifications have only just been released. > > That's certainly true, but it's pretty clear that the DMARC crowd wants > to make it work so we mailing list users stop hating on them. That is nice, but does not affect my recommendation, which is predicated on a simple rule: When seeking to solve immediate issues, use existing, tested tools. /Do not rely on anything that is in the pipeline because you have cannot have any reliable knowledge of when it will be operationally viable./ d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net