watchNS/kishindo.co.jpについて、ここに記述してください。
%dnsq ns kishindo.co.jp a.dns.jp
2 kishindo.co.jp: 107 bytes, 1+0+2+2 records, response, noerror query: 2 kishindo.co.jp authority: kishindo.co.jp 86400 NS ns2.dns.ne.jp authority: kishindo.co.jp 86400 NS ns1.dns.ne.jp additional: ns1.dns.ne.jp 86400 A 210.188.224.9 additional: ns2.dns.ne.jp 86400 A 210.224.172.13
19:31d%dnsq ns kishindo.co.jp ns1.dns.ne.jp
2 kishindo.co.jp: 75 bytes, 1+2+0+0 records, response, authoritative, noerror query: 2 kishindo.co.jp answer: kishindo.co.jp 3600 NS ns2.dns.ne.jp answer: kishindo.co.jp 3600 NS ns1.dns.ne.jp
19:31d%dnsq any kishindo.co.jp ns1.dns.ne.jp
255 kishindo.co.jp: 250 bytes, 1+7+2+0 records, response, authoritative, noerror query: 255 kishindo.co.jp answer: kishindo.co.jp 3600 NS ns1.dns.ne.jp answer: kishindo.co.jp 3600 NS ns2.dns.ne.jp answer: kishindo.co.jp 600 MX 300 mx2.firstserver.ne.jp answer: kishindo.co.jp 600 MX 100 mail.kishindo.co.jp answer: kishindo.co.jp 600 MX 200 mx1.firstserver.ne.jp answer: kishindo.co.jp 600 A 203.145.242.30 answer: kishindo.co.jp 3600 SOA master.dns.ne.jp tech.sakura.ad.jp 2011041900 3600 900 3600000 3600 authority: kishindo.co.jp 3600 NS ns2.dns.ne.jp authority: kishindo.co.jp 3600 NS ns1.dns.ne.jp
ここまでなら、特におかしいところはない。
%dnsq a www.kishindo.co.jp ns1.dns.ne.jp
1 www.kishindo.co.jp: 91 bytes, 1+0+2+0 records, response, noerror query: 1 www.kishindo.co.jp authority: www.kishindo.co.jp 600 NS nsas3.firstserver.ne.jp authority: www.kishindo.co.jp 600 NS nsas4.firstserver.ne.jp
www がサブドメインとして、外部に委譲されている。そして、
19:33d%dnsq a www.kishindo.co.jp nsas3.firstserver.ne.jp
1 www.kishindo.co.jp: 126 bytes, 1+2+2+0 records, response, authoritative, noerror query: 1 www.kishindo.co.jp answer: www.kishindo.co.jp 3600 CNAME mail.kishindo.co.jp answer: mail.kishindo.co.jp 3600 A 203.145.242.30 authority: kishindo.co.jp 3600 NS nsas3.firstserver.ne.jp authority: kishindo.co.jp 3600 NS nsas4.firstserver.ne.jp
firstserver.ne.jp は www サブドメインではなく、kishindo の権威サーバだと主張する。 これを受け入れるか。-- ToshinoriMaeno 2012-04-03 10:45:28
1. named 9.9.0
;; AUTHORITY SECTION: mail.kishindo.co.jp. 600 IN NS nsas4.firstserver.ne.jp. mail.kishindo.co.jp. 600 IN NS nsas3.firstserver.ne.jp.
2. mail.kishindo.co.jp
権威サーバはどこか。
19:42m6%dig -t a mail.kishindo.co.jp @ns1.dns.ne.jp ~
; <<>> DiG 9.9.0 <<>> -t a mail.kishindo.co.jp @ns1.dns.ne.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5623 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;mail.kishindo.co.jp. IN A ;; AUTHORITY SECTION: mail.kishindo.co.jp. 600 IN NS nsas3.firstserver.ne.jp. mail.kishindo.co.jp. 600 IN NS nsas4.firstserver.ne.jp. ;; Query time: 0 msec ;; SERVER: 210.188.224.9#53(210.188.224.9) ;; WHEN: Tue Apr 3 19:42:45 2012 ;; MSG SIZE rcvd: 103
19:42m6%dig -t a mail.kishindo.co.jp @nsas3.firstserver.ne.jp.
; <<>> DiG 9.9.0 <<>> -t a mail.kishindo.co.jp @nsas3.firstserver.ne.jp. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62956 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;mail.kishindo.co.jp. IN A ;; ANSWER SECTION: mail.kishindo.co.jp. 3600 IN A 203.145.242.30 ;; AUTHORITY SECTION: kishindo.co.jp. 3600 IN NS nsas3.firstserver.ne.jp. kishindo.co.jp. 3600 IN NS nsas4.firstserver.ne.jp. ;; Query time: 10 msec ;; SERVER: 164.46.1.79#53(164.46.1.79) ;; WHEN: Tue Apr 3 19:43:12 2012 ;; MSG SIZE rcvd: 119
19:43m6%dig -t a www.kishindo.co.jp @nsas3.firstserver.ne.jp. ~
; <<>> DiG 9.9.0 <<>> -t a www.kishindo.co.jp @nsas3.firstserver.ne.jp. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43054 ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.kishindo.co.jp. IN A ;; ANSWER SECTION: www.kishindo.co.jp. 3600 IN CNAME mail.kishindo.co.jp. mail.kishindo.co.jp. 3600 IN A 203.145.242.30 ;; AUTHORITY SECTION: kishindo.co.jp. 3600 IN NS nsas3.firstserver.ne.jp. kishindo.co.jp. 3600 IN NS nsas4.firstserver.ne.jp. ;; Query time: 10 msec ;; SERVER: 164.46.1.79#53(164.46.1.79) ;; WHEN: Tue Apr 3 19:44:34 2012 ;; MSG SIZE rcvd: 137