In article <mailman.1224.1271891255.21153.bind-us...@lists.isc.org>,
Mark Hedges <hed...@scriptdolphin.com> wrote:
> Hi...
>
> Is it possible to configure .localdomain to delegate a
> subdomain to 127.0.0.2, so that the client then tries to do
> a lookup from that localhost address on itself?
>
> The scenario is a farm of sendmail + RBL servers that have
> independent management and databases, but a single bind
> server. Sendmail etc. would do a lookup of
> 78.56.34.12.rbl.localdomain and it would look at localhost
> on 127.0.0.2, where the local RBL service listens.
You need to run a caching nameserver on the sendmail machines, and point
them to 127.0.0.1 in /etc/resolv.conf. The stub resolver doesn't follow
delegations, it sends recursive queries and expects the server to do all
the work.
>
> Is that possible?
>
> For lookups that work when queried directly from the client
> local RBL on 127.0.0.2,
>
> this causes the response "no answer:"
>
> view local_domains {
> match-clients { localhost; internal; };
> match-destinations { localhost; internal; };
> recursion no;
> include "/etc/named.rfc1912.zones";
> };
>
> and "recursion yes" causes the response "NXDOMAIN."
>
> Those were better outcomes, it seemed, than "response timed
> out" when rfc1912.zones was lumped into views of the
> internal network and vpn domains, which have recursion for
> looking up external names.
>
> Mark
--
Barry Margolin, bar...@alum.mit.edu
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***
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