Unless there's a strong academic reason, it's probably more work than it's worth for the average person. It becomes a vector for attack, and there's external infrastructure that has to be maintained as well (DNS, SPF, DKIM, etc)
Unless there's a strong academic reason, it's probably more work than it's worth for the average person. It becomes a vector for attack, and there's external infrastructure that has to be maintained as well (DNS, SPF, DKIM, etc)