cache only name server

[Kevin Darcy]

sysadmin at hostalia.com wrote:

>Hi!!!
>
> I have installed bind (as cache only server) and it works enough good
>but often when a zone changes the bind shows the old zone value and i
>must reload the bind server so bind shows the correct zone value.
>
>this is my configuration:
>
>options {
>        directory "/var/named";
>        allow-query { any; };
>        allow-transfer { none; };
>        allow-recursion { any; };
>        notify no;
>        recursive-clients 1500;
>        listen-on { IP; };
>        pid-file "/var/run/named.pid";
>// 
>        auth-nxdomain no;    # conform to RFC1035
>};
>zone "." {
>        type hint;
>        file "db.root";
>};
>
>
> I have put this options but the result is the same:
>
>      max-cache-ttl 1800;
>      max-ncache-ttl 1800;
>      max-cache-size 100k;
>
>What have I to do to prevent bind from showing the old zone value?
>  
>
Get the zone owner(s) to reduce the TTL value(s) on the relevant record(s).

Be aware, however, that below a certain threshold, tiny TTLs are rather 
anti-social. It's one thing to use up your own server capacity, network 
capacity, etc. doing tons of extra DNS-resolution work for dubious 
benefit; it's quite another thing to overwork everyone *else*'s servers, 
networks, etc., to resolve names in your domain(s), without a strong 
justification for doing so.

                                                                         
                                    - Kevin