29: I Find Your Lack of DMARC Disturbing

This book is going to get me hate mail from DMARC advocates, but otherwise I would get hate mail from users. Users win.

If you don’t publish DMARC records, spam detection systems evaluating your messages will say, “I find your lack of DMARC disturbing.” That increases the odds of your messages plunging into the spam folder. But what should you do about reporting, mailing lists, and so on?

If you are running a mail server truly for yourself and you don’t use mailing lists, or if you know none of ...