[CentOS] Apparent BIND problem doing RBL lookups for Postfix

Larry Vaden wrote:
> On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider <ned at unixmail.co.uk> wrote:
>> Changing dns to public services such as google or OpenDNS is not going
>> to help as DNSBLs like Spamhaus will have blocked access by these
>> services. Otherwise it would be simple to avoid paying for (business)
>> access to Spamhaus.
> 
> Au contraire, there are benefits/economies of scale to spamhaus.org
> from having an aggregator like opendns.
> 

Indeed, but not if you are charging for high volume and/or commercial use.