Reverse DNS problems

Mark.Andrews at nominum.com Mark.Andrews at nominum.com
Sun Oct 15 22:47:41 UTC 2000


	Len, They have performed a classless delegation.  Here are
	the NS records from there servers.

32.34.219.64.in-addr.arpa.  2H IN NS  r65.org.
32.34.219.64.in-addr.arpa.  2H IN NS  littlebrother.r65.org.
32.34.219.64.in-addr.arpa.  2H IN NS  ns1.swbell.net.
32.34.219.64.in-addr.arpa.  2H IN NS  ns2.swbell.net.

	James, call your zone 32.34.219.64.in-addr.arpa in named.conf
	and populate it with the following.

$TTL 86400
@	SOA	r65.org. sloth.r65.org. (
		2000100414 ; serial
		10800 ; refresh
		3600 ; retry
		604800 ; expire
		86400 ; default_ttl
		)
	NS	r65.org.
	NS	littlebrother.r65.org.
	NS	ns1.swbell.net.
	NS	ns2.swbell.net.
33	PTR	public2.r65.org.
34	PTR	public.r65.org.
35	PTR	r65gate1.r65.org.

	This works because your ISP has added CNAMES in 34.219.64.in-addr.arpa
	which point into 32.34.219.64.in-addr.arpa.

	Mark
> 
> 
> >Your SBIS assigned IP block of :: 64.219.34.32/29
> >
> >has been delegated to your DNS server for the reverse
> >
> >in-addr lookups. This is RFC2317 < class C DEFANGED_STYLEreverse delegation.
> >
> >The in-addr zone has been delegated to:
> >
> >r65.org 64.219.34.34
> 
> Maybe in the paperwork,  as you can see here:
> 
> http://www.samspade.org/t/lookat.cgi?address=64.219.34.34&ipblock=on
> 
> but not technically ...
> 
> dig -x 64.219.34.34
> 
> says they haven't done it in their DNS.
> 
> And this:
> 
> http://www.samspade.org/t/dnl.cgi?a=64.219.34.34
> 
> shows your ip's PTR in not in their reverse zone anymore
> 
> And here's some progress:
> 
> # dig -x 64.219.34.34 soa
> 
> ; <<>> DiG 8.2 <<>> -x soa
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
> ;; QUERY SECTION:
> ;;      34.34.219.64.in-addr.arpa, type = SOA, class = IN
> 
> ;; ANSWER SECTION:
> 34.34.219.64.in-addr.arpa.  1h34m28s IN CNAME  34.32.34.219.64.in-addr.arpa.
> 
> ;; AUTHORITY SECTION:
> 34.219.64.in-addr.arpa.  0S IN SOA  r65.org. 
> sloth.r65.org.34.219.64.in-addr.arpa. (
>                                          2000100414      ; serial
>                                          3H              ; refresh
>                                          1H              ; retry
>                                          1W              ; expiry
>                                          1D )            ; minimum
> 
> 
> Len
> 
> 
> http://BIND8NT.MEIway.com: ISC BIND 8.2.2 p5  installable binary for NT4
> http://IMGate.MEIway.com:  Build free, hi-perf, anti-spam mail gateways
> 
> 
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com



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