On Mon, 04 Mar 2013 12:06:20 -0600 Blake Hudson <bl...@ispn.net> wrote:
> Just hoping to get a consensus on this. Postfix is stating that a > host (in fact several hosts from the same ISP) does not have rDNS, > because our DNS (Bind 9.8) returns SERVFAIL when looking up a PTR > record for it. The IP in question is 63.171.0.212. From my > perspective, this IP does not have a PTR record and as such does not > have proper rDNS. Other tools (including older versions of bind) > might say otherwise; What do you say? dig +trace 212.0.171.63.in-addr.arpa ; <<>> DiG 9.8.1-P1 <<>> +trace 212.0.171.63.in-addr.arpa ;; global options: +cmd . 107196 IN NS c.root-servers.net. . 107196 IN NS j.root-servers.net. . 107196 IN NS h.root-servers.net. . 107196 IN NS b.root-servers.net. . 107196 IN NS e.root-servers.net. . 107196 IN NS d.root-servers.net. . 107196 IN NS a.root-servers.net. . 107196 IN NS k.root-servers.net. . 107196 IN NS f.root-servers.net. . 107196 IN NS m.root-servers.net. . 107196 IN NS l.root-servers.net. . 107196 IN NS g.root-servers.net. . 107196 IN NS i.root-servers.net. ;; Received 436 bytes from 192.168.1.2#53(192.168.1.2) in 29 ms in-addr.arpa. 172800 IN NS e.in-addr-servers.arpa. in-addr.arpa. 172800 IN NS a.in-addr-servers.arpa. in-addr.arpa. 172800 IN NS b.in-addr-servers.arpa. in-addr.arpa. 172800 IN NS f.in-addr-servers.arpa. in-addr.arpa. 172800 IN NS c.in-addr-servers.arpa. in-addr.arpa. 172800 IN NS d.in-addr-servers.arpa. ;; Received 419 bytes from 192.228.79.201#53(192.228.79.201) in 94 ms 63.in-addr.arpa. 86400 IN NS t.arin.net. 63.in-addr.arpa. 86400 IN NS z.arin.net. 63.in-addr.arpa. 86400 IN NS u.arin.net. 63.in-addr.arpa. 86400 IN NS w.arin.net. 63.in-addr.arpa. 86400 IN NS r.arin.net. 63.in-addr.arpa. 86400 IN NS y.arin.net. 63.in-addr.arpa. 86400 IN NS x.arin.net. 63.in-addr.arpa. 86400 IN NS v.arin.net. ;; Received 179 bytes from 199.212.0.73#53(199.212.0.73) in 20 ms 171.63.in-addr.arpa. 86400 IN NS NS3-AUTH.SPRINTLINK.NET. 171.63.in-addr.arpa. 86400 IN NS NS2-AUTH.SPRINTLINK.NET. 171.63.in-addr.arpa. 86400 IN NS NS1-AUTH.SPRINTLINK.NET. ;; Received 126 bytes from 199.212.0.63#53(199.212.0.63) in 18 ms 212.0.171.63.in-addr.arpa. 86400 IN CNAME 63.171.0.212.cust.lkq.sprintlink.net. 171.63.in-addr.arpa. 86400 IN NS ns1-auth.sprintlink.net. 171.63.in-addr.arpa. 86400 IN NS ns2-auth.sprintlink.net. 171.63.in-addr.arpa. 86400 IN NS ns3-auth.sprintlink.net. ;; Received 162 bytes from 144.228.255.10#53(144.228.255.10) in 35 ms > > --Blake* > > > > > *
