On Thu, May 29, 2008 at 11:25:19AM -0700, Marc Perkel wrote: > I've also created a DNS based list of domains that provide consumer > dynamic IP address space. I'm using this list internally but thought I'd > make it public in case others can use it. > > Trying to inspire innovation. > > Example: > > dig comcast.com.isphosts.junkemailfilter.com > > This list was created by grabbing the registry barrier part of the > domain name of IPs from other DNS lists that list the IPs as dynamic.
How is one supposed to use this list? You posted a _very_ general list that will match all the ISPs legimate outgoing MX servers too. So it's must not be for blocking or even positive scoring.