Issue with MX lookups - recursion disabled

[Chris Buxton]

Have you turned off application of the search list in nslookup? It's  
on by default, and with Windows (and the Windows version of  
nslookup), I'm not sure whether it's smart enough to query for the  
original name first.

If that's not it, try sending a non-recursive query, or better yet,  
using dig to send a non-recursive query - it's hard to tell what's  
going on without using 'dig +norec' to see the entire response (and  
to know exactly what the query was without having nslookup mangle it).

Chris Buxton
Men & Mice

On Aug 24, 2006, at 1:30 PM, Jack Ridgway wrote:

> I am running bind 9.2.6 on Windows 2003.
>
> I am trying to setup an authoritative only name server, so I have
> disabled recursion.
>
> However, when I do this, the server seems to have a problem  
> resolving MX
> records for the domains it is authoritative for.  When recursion is
> enabled, MX records resolve fine.
>
> Here is my named.conf:
>
> acl mynameservers {
>  216.79.144.2;
>  216.79.144.5;
>  216.79.144.6;
>  130.18.80.12;
>  130.18.80.13; };
>
> logging {
>  category lame-servers {null; };
>  category security {null; };
>  category update {null; }; };
>
> options {
>  directory "c:\winnt\system32\dns\etc";
>  allow-transfer { mynameservers; };
>  recursion no; };
>
> zone "0.0.127.in-addr.arpa" {
>  type master;
>  file "db.local";
>  notify no; };
>
> zone "sbcjc.cc.ms.us" {
>  type master;
>  file "db.sbcjc.cc.ms.us";
>  };
> Here is my zone file:
> $TTL 12h
> ;
> @ IN SOA webcache.sbcjc.cc.ms.us. hostmaster.sbcjc.cc.ms.us. (
>    2006022001
>    10800
>    3600
>    604800
>    38400 )
> ;
>    IN NS webcache
>    IN NS ons1
>    IN NS ons2
> ;
>    IN MX 5 ironport
> ;
> localhost  IN A 127.0.0.1
> webcache  IN A 216.79.144.2
> ironport  IN A 216.79.144.3
> ons2  IN A 216.79.144.5
> ons1  IN A 216.79.144.6
> ;
>
> nslookup, recursion disabled:
>> set type=a
>> ironport.sbcjc.cc.ms.us
> Server:  ons1.sbcjc.cc.ms.us
> Address:  216.79.144.6
>
> Name:    ironport.sbcjc.cc.ms.us
> Address:  216.79.144.3
>
>> set type=mx
>> sbcjc.cc.ms.us
> Server:  ons1.sbcjc.cc.ms.us
> Address:  216.79.144.6
>
> (root)  nameserver = G.ROOT-SERVERS.NET
> (root)  nameserver = H.ROOT-SERVERS.NET
> (root)  nameserver = I.ROOT-SERVERS.NET
> (root)  nameserver = J.ROOT-SERVERS.NET
> (root)  nameserver = K.ROOT-SERVERS.NET
> (root)  nameserver = L.ROOT-SERVERS.NET
> (root)  nameserver = M.ROOT-SERVERS.NET
> (root)  nameserver = A.ROOT-SERVERS.NET
> (root)  nameserver = B.ROOT-SERVERS.NET
> (root)  nameserver = C.ROOT-SERVERS.NET
> (root)  nameserver = D.ROOT-SERVERS.NET
> (root)  nameserver = E.ROOT-SERVERS.NET
> (root)  nameserver = F.ROOT-SERVERS.NET
> A.ROOT-SERVERS.NET      internet address = 198.41.0.4
> B.ROOT-SERVERS.NET      internet address = 192.228.79.201
> C.ROOT-SERVERS.NET      internet address = 192.33.4.12
> D.ROOT-SERVERS.NET      internet address = 128.8.10.90
> E.ROOT-SERVERS.NET      internet address = 192.203.230.10
> F.ROOT-SERVERS.NET      internet address = 192.5.5.241
> G.ROOT-SERVERS.NET      internet address = 192.112.36.4
> H.ROOT-SERVERS.NET      internet address = 128.63.2.53
> I.ROOT-SERVERS.NET      internet address = 192.36.148.17
> J.ROOT-SERVERS.NET      internet address = 192.58.128.30
> K.ROOT-SERVERS.NET      internet address = 193.0.14.129
> L.ROOT-SERVERS.NET      internet address = 198.32.64.12
> M.ROOT-SERVERS.NET      internet address = 202.12.27.33
>>
>
> nslookup with recursion enabled:
>> set type=a
>> ironport.sbcjc.cc.ms.us
> Server:  ons1.sbcjc.cc.ms.us
> Address:  216.79.144.6
>
> Name:    ironport.sbcjc.cc.ms.us
> Address:  216.79.144.3
>
>> set type=mx
>> sbcjc.cc.ms.us
> Server:  ons1.sbcjc.cc.ms.us
> Address:  216.79.144.6
>
> sbcjc.cc.ms.us  MX preference = 5, mail exchanger  
> ironport.sbcjc.cc.ms.us
> sbcjc.cc.ms.us  nameserver = webcache.sbcjc.cc.ms.us
> sbcjc.cc.ms.us  nameserver = ons1.sbcjc.cc.ms.us
> sbcjc.cc.ms.us  nameserver = ons2.sbcjc.cc.ms.us
> ironport.sbcjc.cc.ms.us internet address = 216.79.144.3
> ons1.sbcjc.cc.ms.us     internet address = 216.79.144.6
> ons2.sbcjc.cc.ms.us     internet address = 216.79.144.5
> webcache.sbcjc.cc.ms.us internet address = 216.79.144.2
>>
>
> Any ideas what I am missing?
>
>
>
>