On Wed, Jul 02, 2008 at 12:08:43PM -0700, John Hardin wrote: > On Wed, 2 Jul 2008, Marc Perkel wrote: > >> Again - it's not to figure out where spam comes from. It's figuring out >> where non-spam comes from. I think there are registrars out there that >> don't have any spam domains registered. > > Right, but how do you guarantee a host with a whitelisted RDNS domain > name doesn't get infected with a smapbot?
What's that got to do with anything? If there's a 0.5% chance, who cares. You should always scan for viruses, but it's trivial to skip SA for such cases. Are you saying that we shouldn't take advantage of DNSWL data either, since it's possible that some spam may come?
