Also Google is starting to implement requiring it ... https://support.google.com/a/answer/13198639
Mails with invalid DKIMS (ie. missing ARC, and containing remnants of previous DKIM's) will be considered to be unauthenticated.
So this ARC thing does become a thingy.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.