On Mon, 19 Apr 2010 09:09:38 -0400
donovan jeffrey j <dono...@beth.k12.pa.us> wrote:

> 
> On Apr 19, 2010, at 9:03 AM, Ralf Hildebrandt wrote:
> 
> > * donovan jeffrey j <dono...@beth.k12.pa.us>:
> > 
> >> this system in question picks up mail ( primary MX ) for about
> >> 2000 users.
> > 
> > This should well be within the limits. We're execeeding the limit at
> > about 30k users. Maybe you're using your ISPs DNS forwarder?
> 
> Im not sure i understand. I know my isp pulls zone files from me, and
> runs a secondary dns server. -j

Your nslookup shows you using 207.172.3.20 as a nameserver:

20.3.172.207.in-addr.arpa       name = auth1.dns.rcn.net

Your ISP's nameserver. You need to run your own, so that you query
spamhaus directly. They are counting all the hits from RCN.


> 


-- 
John

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