Ending email forgery

http://weblog.infoworld.com/udell/2004/04/21.html#a980

In our July 18 feature, Canning Spam we mentioned an Internet draft proposal from Hadmut Danisch, called RMX (Reverse Mail eXchange). It was an elaboration of an earlier proposal by Paul Vixie, architect of BIND (Berkeley Internet Name Domain), who in turn attributes the idea to Jim Miller of JCM Consulting. The idea is elegantly simple. In addition to publishing the MX (Mail Exchange) DNS records that identify inbound mail hosts, an organization also publishes reverse MX records that identify outbound hosts. A receiving server queries the DNS to find out if the sending host is so authorized. The name yahoo.com is easy to forge, but the IP addresses of Yahoo's outbound servers are not.

Something more to read... sigh. I'm so far behind...