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Oliver Henriot
Asked: 2012-12-11 07:25:01 +0800 CST

BIND - connection timed out; no servers could be reached - default query to a domain

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I have a bind server which, when you query it this way (from localhost, obviously) :

host nomachinehasthisname 127.0.0.1

replies :

;; connection timed out; no servers could be reached

It throws the same error if I query it using its public address.

It throws the same error no matter from which client I do this query.

It does not throw the error if I use a fqdn as the query value.

It throws the error only if the query is on a A record not present in my dns.

If I query a non-existant A record using a fqdn query replies NXDOMAIN as expected.

If I query it using dig +trace :

dig +trace nomachinehasthisname @127.0.0.1

it shows that my server tries to query the root servers and then times out (which is logical).

The odd thing is that I have 4 other bind servers with pretty much identical configurations and none of them have this behavior. I can't figure what it is that is missing on this server which is making it fail to reply the same way as the other servers.

I have these options in my named.conf :

options {
        directory "/var/spool/named";
        auth-nxdomain no;
        allow-recursion { internal_networks; };    // restrict recursion
};

and it's more or less the same for the other servers.

I would like my server to default to the search domain listed in /etc/resolv.conf for non-fqdn A record queries, which is what the other servers do.

The resolv.conf is similar between this server and the others. I even have some servers which have less info (no "search domain" info for example) and do not have this problem.

How do you get bind to default to a particular domain for non-fqdn A record queries?

domain-name-system

0 Answers