nslookup of type=any
Joseph Begumisa
begj at cfi.co.ug
Sun Jan 20 15:50:20 UTC 2002
> I have notice something that seems a bit odd.
>
> If I do an nslookup from a remote server and set type=any, I don't get
> back my MX records for my domain.
>
> For example:
>
> >server ns1.panasonic.com
> >set type=any
> >pti.panasonic.com
> Server: ns1.panasonic.com
> Address: 140.212.204.25
>
> Non-authoritative answer:
> pti.panasonic.com nameserver = oak.research.panasonic.com
> pti.panasonic.com nameserver = elm.research.panasonic.com
> pti.panasonic.com internet address = 150.169.1.4
>
> Authoritative answers can be found from:
> pti.panasonic.com nameserver = oak.research.panasonic.com
> pti.panasonic.com nameserver = elm.research.panasonic.com
> oak.research.panasonic.com internet address = 150.169.1.4
> elm.research.panasonic.com internet address = 150.169.1.3
>
> now if I set type=mx
>
> I get the MX records. Then set back to ANY and the MX records are
> included in the response. Is this normal?
from the responses above, ns1.panasonic.com is not authoritative for
pti.panasonic.com but has cached records of the authoritative nameservers
for it. ns1.panasonic.com also has recursion enabled so when you
ask for the mx records for pti.panasonic.com, it gets the mx records
from the authoritative nameservers and also caches them. from the dig man
page, query-type any, refers to all/any information about the requested
domain. therefore, it is normal for it to display the mx records when you
ask it for any data again.
lastly, you might want to take a look at your mx records configuration and
add the necessary trailing dots so that you have something like
pti.panasonic.com. 12H IN MX 10 oak.research.panasonic.com.
pti.panasonic.com. 12H IN MX 5 redwood.research.panasonic.com.
; <<>> DiG 8.3 <<>> +norec @oak.research.panasonic.com. pti.panasonic.com. mx
; (1 server found)
;; res options: init defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61612
;; flags: qr aa; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;; pti.panasonic.com, type = MX, class = IN
;; ANSWER SECTION:
pti.panasonic.com. 12H IN MX 10 oak.research.panasonic.com.pti.panasonic.com.
pti.panasonic.com. 12H IN MX 5 redwood.research.panasonic.com.pti.panasonic.com.
Joseph.
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