On 2/5/11 7:11 PM, Reindl Harald wrote:
Am 05.02.2011 19:05, schrieb Jeroen Geilman:
On 2/5/11 6:58 PM, Reindl Harald wrote:
bullshit!
<snipped paragraphs of invective>
Way to make your case.
sorry, but this was the only right answer for you can not
use dns-forwarder and blacklists"
I don't see any answer in there, not least because it wasn't parsable
English so much as a Tourette's stream-of-consciousness.
I suppose his reasoning was that querying a DNSBL through a forwarder
may fail for the simple reason that DNSBLs often have limits on a single
client requesting huge amounts of data. I know spamhaus does.
If you use a public internet forwarder for DNSBL queries, this may fail
simply because too many people use that same forwarder to query the same
DNSBL.
But I'm not him, so I can't know for sure if that was his meaning.
http://www.postfix.org/TUNING_README.html
Run a local name server to reduce slow-down due to DNS lookups.
If you run multiple Postfix systems, point each local name server
to a shared forwarding server to reduce the number of lookups
across the upstream network link.
where does it interest your named if his forwarder is in
your lan or outside? there is no magic in dns
The quote above speaks specifically about using a shared forwarding
server *to reduce the number of lookups across the upstream network link*.
If you use a public forwarder, you are not reducing upstream network
lookups.
So, strictly speaking, he is right, and you're exploding up the wrong tree.
--
J.
