DNS/watch/yatz.qmail.jp/3について、ここに記述してください。
-- ToshinoriMaeno 2011-07-17 23:51:56
1. コンテンツサーバ
$ dnsq any yatz.qmail.jp c.ns.qmail.jp
255 yatz.qmail.jp: 173 bytes, 1+5+0+1 records, response, authoritative, noerror query: 255 yatz.qmail.jp answer: yatz.qmail.jp 86400 SOA c.ns.qmail.jp hostmaster.m.qmail.jp 1310945943 16384 2048 1048576 86400 answer: yatz.qmail.jp 600 NS c.ns.qmail.jp answer: yatz.qmail.jp 600 MX 0 a.mx.yatz.qmail.jp answer: yatz.qmail.jp 3600 CNAME sakura.qmail.jp answer: yatz.qmail.jp 600 A 131.112.32.2 additional: c.ns.qmail.jp 86400 A 59.106.175.222
一度目のエラーは無視する。
$dig a yatz.qmail.jp @203.138.63.115 ~
; <<>> DiG 9.6.2-P2 <<>> a yatz.qmail.jp @203.138.63.115 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 42733 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;yatz.qmail.jp. IN A ;; Query time: 19 msec ;; SERVER: 203.138.63.115#53(203.138.63.115) ;; WHEN: Mon Jul 18 08:42:15 2011 ;; MSG SIZE rcvd: 31
%dig a yatz.qmail.jp @203.138.63.115
; <<>> DiG 9.6.2-P2 <<>> a yatz.qmail.jp @203.138.63.115 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34945 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 0 ;; QUESTION SECTION: ;yatz.qmail.jp. IN A ;; ANSWER SECTION: yatz.qmail.jp. 3600 IN CNAME sakura.qmail.jp. sakura.qmail.jp. 53401 IN A 59.106.175.222 ;; AUTHORITY SECTION: qmail.jp. 53376 IN NS uz5b3p79vgf8v8yttum0fr1cbpg4tr0gdywhvwzdmb6u3hj6b8lk30.a.ns.qmail.jp. qmail.jp. 53376 IN NS a.ns.qmail.jp. ;; Query time: 15 msec ;; SERVER: 203.138.63.115#53(203.138.63.115) ;; WHEN: Mon Jul 18 08:42:26 2011 ;; MSG SIZE rcvd: 156
CNAME が優先されている。
2. google
%dig any yatz.qmail.jp @8.8.8.8
; <<>> DiG 9.6.2-P2 <<>> any yatz.qmail.jp @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58291 ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;yatz.qmail.jp. IN ANY ;; ANSWER SECTION: yatz.qmail.jp. 85977 IN SOA c.ns.qmail.jp. hostmaster.m.qmail.jp. 1310945943 16384 2048 1048576 86400 yatz.qmail.jp. 177 IN NS c.ns.qmail.jp. yatz.qmail.jp. 177 IN MX 0 a.mx.yatz.qmail.jp. yatz.qmail.jp. 3177 IN CNAME sakura.qmail.jp. yatz.qmail.jp. 177 IN A 131.112.32.2 ;; Query time: 43 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Jul 18 08:48:28 2011 ;; MSG SIZE rcvd: 157
%dig a yatz.qmail.jp @8.8.8.8
; <<>> DiG 9.6.2-P2 <<>> a yatz.qmail.jp @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47789 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;yatz.qmail.jp. IN A ;; ANSWER SECTION: yatz.qmail.jp. 3470 IN CNAME sakura.qmail.jp. sakura.qmail.jp. 86270 IN A 59.106.175.222 ;; Query time: 66 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Jul 18 08:50:29 2011 ;; MSG SIZE rcvd: 68
CNAMEが優先されている。
3. MX query
%dig mx yatz.qmail.jp @8.8.8.8 ~
; <<>> DiG 9.6.2-P2 <<>> mx yatz.qmail.jp @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23691 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;yatz.qmail.jp. IN MX ;; ANSWER SECTION: yatz.qmail.jp. 3319 IN CNAME sakura.qmail.jp. ;; AUTHORITY SECTION: qmail.jp. 1800 IN SOA a.ns.qmail.jp. hostmaster.m.qmail.jp. 1310600511 16384 2048 1048576 86400 ;; Query time: 95 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Jul 18 08:52:59 2011 ;; MSG SIZE rcvd: 106