[Dshield] spam - dns - Verisign
sladewig at bankinfo.com
Tue Sep 16 12:47:12 GMT 2003
On 09/16/2003 06:47 AM, Johannes B. Ullrich wrote:
> A new 'twist' to spam filters: Starting this week, Verisign (aka
> Network Solutions) is setting up its root DNS servers (.net and .com) to
> resolve all domain names. All non existing domain names will point to a
> Verisign page.
> So if you are using any check to see if the origin domain exists, it
> will never trigger.
$ host nonexistingdomain.com
nonexistingdomain.com has address 188.8.131.52
echo "184.108.40.206 REJECT domain does not resolve" >> /etc/mail/access
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