issues with mcd.com DNS

[Dave Lugo]

Dave Lugo wrote:
--snip--
>>I think that usually such a borked configuration would work, but the C&W
>>secondary is returning SERVFAIL rather than a referral, and it is too
>>early for me to figure out what that means, but I'd guess it ain't
>>helping matters.
> 
> 
> I'm sure :)
> 
> I'm also seeing similar behavior for mcdkorea.co.uk:
> 
> on dcns2.ch1.ummail.com (this box doesn't accept queries from the public 
> internet, so in case you try and get nuttin ;), I can do this:
> 
> 
> [root at dcns2.ch1 log]# dig mx mcdkorea.co.kr
> 
> ; <<>> DiG 9.2.1 <<>> mx mcdkorea.co.kr
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34629
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;mcdkorea.co.kr.                        IN      MX
> 
> ;; ANSWER SECTION:
> mcdkorea.co.kr.         2585    IN      MX      1010 mcdkorea.co.kr.
> 
> ;; AUTHORITY SECTION:
> mcdkorea.co.kr.         2585    IN      NS      ns.mcdkorea.co.kr.
> 
> ;; Query time: 2 msec
> ;; SERVER: 216.64.206.205#53(216.64.206.205)
> ;; WHEN: Mon Oct 13 09:34:30 2003
> ;; MSG SIZE  rcvd: 65
> 
> 
> So, I would assume that the answer is now cached on dcns2.ch1.ummail.com.
> 
> ...but on another box on the same /24, when I query against 
> dcns2.ch1.ummail.com, I get:
> 
> mc1:/root> dig mx mcdkorea.co.kr @dcns2.ch1.ummail.com
> 
> ; <<>> DiG 8.2 <<>> mx mcdkorea.co.kr @dcns2.ch1.ummail.com
> ; (1 server found)
> ;; res options: init recurs defnam dnsrch
> ;; res_nsend to server dcns2.ch1.ummail.com  216.64.213.4: Connection 
> timed out
> 
> 
> ...and I have *no* idea why.  Restarting named on dcns2.ch1.ummail.com 
> doesn't help.
> 
> 

Following up to myself - this appears to be solved.  Apparently there 
was a NAT issue between our nameservers and some bits of MCD.  I'm still 
a bit puzzled *why* the above behaviour was occuring, but I'll take the
"it's fixed" state and worry about the root cause when I have more time.

Thanks,

Dave

-- 
--------------------------------------------------------
  Dave Lugo             | david.lugo at unitedmessaging.com
  Systems Engineer      | http://www.unitedmessaging.com
  United Messaging Inc. | Voice (610)630-9247
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