I have been running DNS on FreeBSD for years and now, all of a sudden, my reverse records are not being recognized and my upstream ISP reports that my DNS server is broken. I have double checked all of my config files and can find nothing that has changed. Here is the DNS Traversal for 21.132.65.207.in-addr.arpa.
<http://www.dnsstuff.com/tools/traversal.ch?domain=21.132.65.207.in-addr.arpa&type=PTR>http://www.dnsstuff.com/tools/traversal.ch?domain=21.132.65.207.in-addr.arpa&type=PTR
Any help from all of you DNS gurus would be greatly appreciated.
here's dig's chain of delegation:
mx1# dig +trace 21.132.65.207.in-addr.arpa
; <<>> DiG 9.2.3 <<>> +trace 21.132.65.207.in-addr.arpa ;; global options: printcmd . 228659 IN NS H.ROOT-SERVERS.NET. . 228659 IN NS I.ROOT-SERVERS.NET. . 228659 IN NS J.ROOT-SERVERS.NET. . 228659 IN NS K.ROOT-SERVERS.NET. . 228659 IN NS L.ROOT-SERVERS.NET. . 228659 IN NS M.ROOT-SERVERS.NET. . 228659 IN NS A.ROOT-SERVERS.NET. . 228659 IN NS B.ROOT-SERVERS.NET. . 228659 IN NS C.ROOT-SERVERS.NET. . 228659 IN NS D.ROOT-SERVERS.NET. . 228659 IN NS E.ROOT-SERVERS.NET. . 228659 IN NS F.ROOT-SERVERS.NET. . 228659 IN NS G.ROOT-SERVERS.NET. ;; Received 244 bytes from 127.0.0.1#53(127.0.0.1) in 7 ms
207.in-addr.arpa. 86400 IN NS chia.arin.net. 207.in-addr.arpa. 86400 IN NS dill.arin.net. 207.in-addr.arpa. 86400 IN NS basil.arin.net. 207.in-addr.arpa. 86400 IN NS henna.arin.net. 207.in-addr.arpa. 86400 IN NS indigo.arin.net. 207.in-addr.arpa. 86400 IN NS epazote.arin.net. 207.in-addr.arpa. 86400 IN NS figwort.arin.net. ;; Received 195 bytes from 128.63.2.53#53(H.ROOT-SERVERS.NET) in 48 ms
65.207.in-addr.arpa. 86400 IN NS ns7.isdn.net. 65.207.in-addr.arpa. 86400 IN NS ns4.isdn.net. 65.207.in-addr.arpa. 86400 IN NS ns5.isdn.net. ;; Received 106 bytes from 192.35.51.32#53(dill.arin.net) in 4113 ms
;; Received 44 bytes from 207.65.46.9#53(ns7.isdn.net) in 48 ms
query for the zone for the ClassC shows server failing:
mx1# dig 132.65.207.in-addr.arpa ns
; <<>> DiG 9.2.3 <<>> 132.65.207.in-addr.arpa ns ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 7171 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;132.65.207.in-addr.arpa. IN NS
same for the .21 host.
SERVFAIL often means a syntax error in the zone file that causes BIND not to load the zone, and answer queries with SERVFAIL, meaning "I know I'm supposed to be auth for the zone, but I have fatal errors with the zone file, so I answer as failing that zone"
Len
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