Gmail thinks “This message may not have been sent by...” you
June 29, 2011
Yesterday, Google rolled out a new feature in Gmail which warns you when it isn’t sure who the email was sent by. This warning isn’t due to some confusion on the server side, this issue is because Google wants to force more people to use SPF records and DKIM signatures. Both of these are good technologies to use (I personally have them both enabled), but I worry about Google’s move to “force” this… and how it will effect users.