Reverse DNS Failure

[Mark.Andrews at nominum.com]

	You and UUnet are disagreeing on who is serving the reverse
	zones.  I suggest that you talk to UUnet and get the reverse
	zones delegated to you.

	Mark


; <<>> DiG 8.3 <<>> -x ptr 
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;	1.130.197.65.in-addr.arpa, type = PTR, class = IN

;; ANSWER SECTION:
1.130.197.65.in-addr.arpa.  5h57m18s IN PTR  user1.libby.org.

;; AUTHORITY SECTION:
130.197.65.in-addr.arpa.  5h57m18s IN NS  auth100.ns.uu.net.
130.197.65.in-addr.arpa.  5h57m18s IN NS  auth110.ns.uu.net.

;; ADDITIONAL SECTION:
auth100.ns.uu.net.	57m17s IN A	198.6.1.202
auth110.ns.uu.net.	57m17s IN A	198.6.1.114

;; Total query time: 1 msec
;; FROM: drugs.dv.isc.org to SERVER: default -- 127.0.0.1
;; WHEN: Mon May  7 08:37:46 2001
;; MSG SIZE  sent: 43  rcvd: 157

; <<>> DiG 8.3 <<>> -x ptr @ns.libby.org 
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;	1.130.197.65.in-addr.arpa, type = PTR, class = IN

;; ANSWER SECTION:
1.130.197.65.in-addr.arpa.  4D IN PTR  libby-gw.libby.org.

;; AUTHORITY SECTION:
130.197.65.in-addr.arpa.  4D IN NS  homer.libby.org.
130.197.65.in-addr.arpa.  4D IN NS  kinkade.kootenet.com.

;; ADDITIONAL SECTION:
homer.libby.org.	4D IN A		65.197.130.2
kinkade.kootenet.com.	4D IN A		65.197.130.10

;; Total query time: 463 msec
;; FROM: drugs.dv.isc.org to SERVER: ns.libby.org  65.197.130.2
;; WHEN: Mon May  7 08:37:15 2001
;; MSG SIZE  sent: 43  rcvd: 184

> Sir:
>   I am an ISP with 2500 customers, my next hop upstream is a BGP router in
> Seattle, Washington. I am going to call the backbone provider (UUNET) on Mond
> ay
> and see if maybe they have their routing tables messed up. For some reason my
> replies to postings haven't been getting to the newsgroup, but in answer to t
> he
> above response, in case this one makes it through, my domain is libby.org and
> the IP addresses are: 65.197.130.0/24, 65.197.131.0/24 and 65.197.129.0/24.
> Thank you for the help, I appreciate you taking the time to respond.
> Franklin
> 
> J Bacher wrote:
> 
> > > > Two months ago I changed backbone service providers, consequently all
> > > > three class C IP adresses had to be changed. I modified all my DNS file
> s
> > > > accordingly. Since the change, any site that requires a  reverse dns
> > > > lookup is inaccessible to our users. Also, any mail servers (msn.com +
> > > > many more) that require reverse dns lookups refuse our mail. When a
> >
> > > As you did not tell us what ip-addresses adn domain names are involved
> > > it's impossible to help you. What are you trying to protect ? Your
> > > problems ?
> >
> > Two tasks need to be accomplished:
> >
> > 1)  Ask your ISP to delegate inverse DNS to your nameservers
> >
> > 2)  Setup inverse DNS
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com