Recently there's also DMARC, which allows a domain owner to specify their support of SPF and DKIM, and how to handle email that doesn't pass authentication. An

Recently there's also DMARC, which allows a domain owner to specify their support of SPF and DKIM, and how to handle email that doesn't pass authentication. Another benefit is feedback reports from major email providers on messages that have passed or failed authentication. http://dmarc.org/ http://dmarc.org/ http://en.wikipedia.org/wiki/DMARC http://en.wikipedia.org/wiki/DMARC