Sam's right of course. :) I think the question might have been (as I read it) regarding a configuration where the resolver is on the local network (private lan), but not on the host which is running spamdyke (not accessible as 127.0.0.1). This is not as ideal as having the resolver running on spamdyke's host, as all DNS traffic hits the wire in this case. However, cached requests don't make it out to the ISP, so it would help in that regard. If your LAN isn't hurting for bandwidth, this setup could be sufficient, but it's not ideal.
I hope this makes sense. -- -Eric 'shubes' On 09/01/2012 02:10 PM, Sam Clippinger wrote: > If 10.0.0.1 is the IP of the local host on the LAN, it shouldn't matter at > all. The OS will realize the IP address is assigned to the local NIC and > won't send any packets across the wire. The only reason it might be a > problem would be if your firewall is configured to block incoming DNS > requests from your LAN, but in that case you would realize the mistake > immediately because no DNS queries would ever succeed. :) > > -- Sam Clippinger > > > > > On Sep 1, 2012, at 12:39 PM, BC wrote: > >> >> >> A novice question perhaps, but does it matter much where one runs the >> local caching resolver? >> >> I have a LAN with IP 10.x.x.x and simply use 10.0.0.1 as the local IP >> for the resolver. My understanding is that any local IP can be used >> so long as it can be reached by those functions needing access to it. >> >> Would I gain any advantage by using 127.0.0.1 instead? >> >> >> On 9/1/2012 11:00 AM, [email protected] wrote: >>> Given what you've described, I would consider whether the host is >>> running a caching nameserver or not. What are the contents of >>> /etc/resolv.conf ? spamdyke is rather heavy on DNS, and network traffic >>> can be reduced a bit by running a resolver on localhost (127.0.0.1). >> >> _______________________________________________ >> spamdyke-users mailing list >> [email protected] >> http://www.spamdyke.org/mailman/listinfo/spamdyke-users _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
