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Date:      Wed, 13 Feb 2008 14:17:25 +1100
From:      Edwin Groothuis <edwin@mavetju.org>
To:        d@delphij.net
Cc:        freebsd-net@freebsd.org, ume@FreeBSD.org
Subject:   Re: Strange resolver behavior
Message-ID:  <20080213031725.GC3957@k7.mavetju>
In-Reply-To: <47B25F71.3050005@delphij.net>
References:  <47B2488D.70707@delphij.net> <20080213015144.GA3957@k7.mavetju> <47B2591D.4000703@delphij.net> <20080213024643.GB3957@k7.mavetju> <47B25F71.3050005@delphij.net>

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On Tue, Feb 12, 2008 at 07:09:37PM -0800, Xin LI wrote:
> > Yes, but it is the MX record querying it is complaining about.
> Well, so perhaps that they are different problems?
> 
> What I think is a problem is that attempting to resolve
> 'ps_other.a.shifen.com' gets "Unknown host", here is a quick testcase:

This is the output to ask the A record for it:

[~] edwin@k7>dig @ns2.a.shifen.com ps_other.a.shifen.com a    

; <<>> DiG 9.3.4-P1 <<>> @ns2.a.shifen.com ps_other.a.shifen.com a
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37047
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ps_other.a.shifen.com.         IN      A

;; ANSWER SECTION:
ps_other.a.shifen.com.  1200    IN      A       202.108.22.46

;; Query time: 522 msec
;; SERVER: 220.181.27.59#53(220.181.27.59)
;; WHEN: Wed Feb 13 14:15:41 2008
;; MSG SIZE  rcvd: 55

Status on the sixth line is NOERROR (yay!) 


This is the output of the MX record:

[~] edwin@k7>dig @ns2.a.shifen.com ps_other.a.shifen.com mx

; <<>> DiG 9.3.4-P1 <<>> @ns2.a.shifen.com ps_other.a.shifen.com mx
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOTIMP, id: 56357
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ps_other.a.shifen.com.         IN      MX

;; Query time: 523 msec
;; SERVER: 220.181.27.59#53(220.181.27.59)
;; WHEN: Wed Feb 13 14:16:13 2008
;; MSG SIZE  rcvd: 39

Status on the sixth line is NOTIMP. That is the part that host fails
on.

Edwin

-- 
Edwin Groothuis      |            Personal website: http://www.mavetju.org
edwin@mavetju.org    |              Weblog: http://www.mavetju.org/weblog/



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