----- Original Message -----
From: OK 2 NET - Andr� Paulsberg <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, August 17, 2000 6:12 AM
Subject: Re: Interesting MAPS issue
> > [root@mail:~]# nslookup rbl.maps.vix.com
> > Server: ns1.supplyguys.net
> > Address: 205.247.132.3
> >
> > *** smtp.supplyguys.net can't find rbl.maps.vix.com: Non-existent
host/domain
> >
> > and I get the same response if I lookup DUL. Makes no sense.
>
> You are using NSLOOKUP to find a A, CNAME or PTR record which is default,
try:
> nslookup -type=SOA rbl.maps.vix.com
>
SNIP
That being said, however, no name server should return NXDOMAIN on such a
query. Does the RFC not specify that the correct answer in this case is
NOERROR with no records or authority data? That's the response I'm used to
from properly configured servers, and the response I currently get for such
a query myself.
frodo:~$ dig rbl.maps.vix.com
; <<>> DiG 8.2 <<>> rbl.maps.vix.com
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUERY SECTION:
;; rbl.maps.vix.com, type = A, class = IN
;; Total query time: 3 msec
;; FROM: frodo to SERVER: default -- 127.0.0.1
;; WHEN: Fri Aug 18 20:11:03 2000
;; MSG SIZE sent: 34 rcvd: 34
(Many kudoes to DJB for qmail and djbdns, but for some reason I still prefer
dirty BIND's 'dig' for diagnostics...
GW)
