Cloudmark: The value of domain names and email
“DKIM is a prime candidate for use as a basis for a new generation of email security mechanisms. The most promising of these appears to be domain reputation, which is the assignment of value to a domain name based on accumulated evidence. This could change the behaviour of email: since bad reputations can be easily shed by switching to a new domain name, the interesting data will be good reputations, and that will mean domain owners will work hard to earn good reputations and even harder to keep them.”


