On 24 Aug 2012 18:08:42 -0000 "John Levine" <jo...@taugh.com> wrote:
> Microsoft's Sender-ID has been using SPF records to do Sender-ID > checks for a decade. You just noticed now? Yes. It's never been an issue for me before now. > In practice, Sender-ID has been a failure, nobody of any importance > uses it any more, and Microsoft's own mail systems including Hotmail > are now doing DKIM and SPF checks. It appears to be on by default as part of Exchange's Intelligent [sic] Message Filter. Regards, David.
