Problem with hosting providers reverse DNS

[Mark Andrews]

> In article <ebtaej$e3h$1 at sf1.isc.org>, andrewgroups at gmail.com wrote:
> 
> > When I run a reverse DNS search on our hosting provider,  this error
> > "WARNING: Duplicate zone found ..."  appears randomly.  Some email
> > server are blocking us and I suspect it is because they have something
> > that is not well configured.  Can anyone figure out what the problem is
> > and why this "Duplicate zone found" error is returned?
> 
> I'm not sure what it's talking about.

	dns-01-002.root-dns.com is lame.

; <<>> DiG 9.3.2 <<>> 56.255.133.216.in-addr.arpa ptr +norec @dns-01-002.root-dns.com
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10581
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;56.255.133.216.in-addr.arpa.	IN	PTR

;; AUTHORITY SECTION:
255.133.216.in-addr.arpa. 79593	IN	NS	dns-01-001.root-dns.com.
255.133.216.in-addr.arpa. 79593	IN	NS	dns-01-002.root-dns.com.

;; ADDITIONAL SECTION:
dns-01-001.root-dns.com. 165990	IN	A	64.7.192.162
dns-01-002.root-dns.com. 165990	IN	A	64.7.192.163

;; Query time: 165 msec
;; SERVER: 64.7.192.163#53(64.7.192.163)
;; WHEN: Wed Aug 16 15:00:13 2006
;; MSG SIZE  rcvd: 139

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