SPF deployment survey

All,
as you probably know, an IETF working group is reviewing the SPF spec.
The evaluation of current deployment is nearly completed, but thus far
only analyzes published SPF records.  Please contribute to a better
understanding by completing the survey:

  https://www.surveymonkey.com/s/SPF-deployment-survey

It will only take three minutes (ten questions on a single page).

Please help reaching all mail admins by forwarding this prompt to
specialized mailing lists and mail admins you are in touch with,
worldwide.  Thank you in advance!