Am 17.11.2011 16:27, schrieb Marc Perkel: > I'm exploring a variety of ideas to determine the difference between > "serious" domains down to throw away domains used by spammers. The ideas > I'm presenting here are not complete but are just a conversation starter. > > for example, if the sending domain has no MX records of its own it is > more likely spam that if there are 3 or more MX records that resolve to > multiple IPs over more than one network. Generally spam only domains are > minimally configured, and highly configured domains are not spam only. I > also think that NS records might indicate that a domain is serious or not. > > I think the serious scale could be a useful factor in SA. It doesn't > determine if it's spam or ham in itself. Yahoo is a serious domain and > there's lost of spam. Serious domains should not be blacklisted for > example. We could also look for consistency. Bad RDNS from a serious > domain might be a spam indicator. > > There might be other methods of detecting serious domains. If they are > using expensive services. Spammers would not have their dns hosted with > Ultra DNS, or use the expensive registrars, or other services that are > expensive. > > Also - thinking we should slowly mine the whois database and provide > some sort of DNS based lookup of whois information to be able to > determine the registrar of a domain, the domain age, or other info that > would be useful in determining that the domain is serious or not. > > Who thinks I'm onto something? > >
in the end this is a reputation question as far i know this is worked on a more global standart with ideas from i.e dkim perhaps you should invest time there not sure if this is a right link http://tools.ietf.org/html/draft-kucherawy-reputation-query-dns-00 but i know others , reading this list know better about whats comming up there, perhaps they answer better and as far i remember , there where solutions to identify domains registration age, as there where a possibility for "tasting" domains, but as i remember this isnt possible anymore -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
