Problems Resolving mdswim.org

[Mark_Andrews at isc.org]

> Late last week, a user reported problems getting to www.mdswim.org
> <www.mdswim.org> .  Turned out after investigation that the DNS lookup of
> the host was failing via our servers for some reason.  I was able to look up
> the host from a remote system's DNS server.  With that IP address I was able
> to resolve it on my DNS servers.  It's simply the forward lookup which is
> not working.  I ended up purging the cache on our 3 secondary DNS servers on
> a whim and that fixed the problem. Unfortunately, the problem cropped up
> again this week.  I'm at a loss now as to what the problem is.  I'm also
> able to traceroute/ping the destination host as well but not able to access
> via DNS.  Any ideas on what's going on here?  Will provide further info as
> needed/requested.
> <mailto:bill.smith at jhuapl.edu <mailto:bill.smith at jhuapl.edu>  
> ISS Systems Server Group 
> Johns Hopkins University Applied Physics Laboratory 
> 11100 Johns Hopkins Road 
> Laurel, MD 20723
> Phone:  443-778-5523
> Web:  http://www.jhuapl.edu <http://www.jhuapl.edu>   
> 

	The delegations are out of date.  The nameservers in the
	old delegations don't exist except as glue.

	Mark

MDSWIM.ORG.		172800	IN	NS	NS2.ANNAPOLISINTERNET.NET.
MDSWIM.ORG.		172800	IN	NS	NS1.ANNAPOLISINTERNET.NET.
;; Received 85 bytes from 204.74.112.1#53(TLD1.ULTRADNS.NET) in 615 ms
MDSWIM.ORG.             14400   IN      NS      NS5.MEWEBDNS.COM.
MDSWIM.ORG.             14400   IN      NS      NS6.MEWEBDNS.COM.
;; SERVER: 216.218.200.171#53(216.218.200.171)

ANNAPOLISINTERNET.NET.  172800  IN      NS      ns1.ANNAPOLISINTERNET.NET.
ANNAPOLISINTERNET.NET.  172800  IN      NS      ns2.ANNAPOLISINTERNET.NET.
;; Received 107 bytes from 192.5.6.30#53(A.GTLD-SERVERS.NET) in 250 ms
ANNAPOLISINTERNET.NET.  14400   IN      NS      NS5.MEWEBDNS.COM.
ANNAPOLISINTERNET.NET.  14400   IN      NS      NS6.MEWEBDNS.COM.
;; SERVER: 216.218.200.171#53(216.218.200.171)


; <<>> DiG 8.3 <<>> NS1.ANNAPOLISINTERNET.NET aaaa 
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;;	NS1.ANNAPOLISINTERNET.NET, type = AAAA, class = IN

;; AUTHORITY SECTION:
ANNAPOLISINTERNET.NET.	3H IN SOA	NS5.MEWEBDNS.COM. root.server3.MEWEBDNS.COM. (
					1058293664	; serial
					8H		; refresh
					2H		; retry
					5w6d16h		; expiry
					1D )		; minimum


;; Total query time: 189 msec
;; FROM: bsdi.dv.isc.org to SERVER: default -- 127.0.0.1
;; WHEN: Wed Oct 15 09:13:18 2003
;; MSG SIZE  sent: 43  rcvd: 108


; <<>> DiG 8.3 <<>> NS2.ANNAPOLISINTERNET.NET AAAA 
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;;	NS2.ANNAPOLISINTERNET.NET, type = AAAA, class = IN

;; AUTHORITY SECTION:
ANNAPOLISINTERNET.NET.	2h36m57s IN SOA  NS5.MEWEBDNS.COM. root.server3.MEWEBDNS.COM. (
					1058293664	; serial
					8H		; refresh
					2H		; retry
					5w6d16h		; expiry
					1D )		; minimum


;; Total query time: 9 msec
;; FROM: bsdi.dv.isc.org to SERVER: default -- 127.0.0.1
;; WHEN: Wed Oct 15 09:13:57 2003
;; MSG SIZE  sent: 43  rcvd: 108

--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org