On Friday, June 23, 2006, 5:31:04 AM, Michael Monnerie wrote: > On Freitag, 23. Juni 2006 14:10 Jeff Chan wrote: >> http://www.bobparsons.com/DomainKiting.html
> Very interesting page, I wasn't aware of Domain Kiting yet. > A check for new domains would be good implemented in the MTA directly, > so postfix could temporary reject delivery until the domain is at least > 6 days old. OK, it would offend real people - but waiting 5 days for a > new company shouldn't be too problematic, the annoiance will stop > automatically. That's an interesting idea, but probably impractical because: 1. Getting domain ages from whois is difficult and very non-uniform between registrars. 2. We probably don't want millions of MTAs doing billions of whois queries per day or per hour. 3. It requires a program like SpamAssassin to deobfuscate and exatract URIs to be checked. 4. A DNSBL is a reasonably good technology for distributing these data. Jeff C. -- Jeff Chan mailto:[EMAIL PROTECTED] http://www.surbl.org/
