Hi everyone, I have been using a Red Hat 6.2 caching only nameserver that is talking to the root servers directly for years without any problem. Recently I seem to have problems with the lookup of a specific domain, freeler.nl, and more specifically pop3.freeler.nl and www.freeler.nl. The names are not resolvable due to a "No response from server". I have to either dig by hand, or do a lookup to pop-env.svr.pol.co.uk of which pop3.freeler.nl is an alias or a lookup of pridnsenv1.svr.pol.co.uk (or pridnsenv2), the authoritative nameserver(s), after which the names are available from the cache. Note that the problem is intermittent, sometimes named can resolve the names even with an empty name cache (either after reboot or after "service named restart"). Is this a bug in bind-8.2.3-0.6.x and/or bind-utils-8.2.3-0.6.x, is it a configuration error of one of the involved nameservers, or is something else going on? It is not a big problem to me, but I am curious why I am having this problem. Any light you can shed is appreciated, as well as hints how to debug the problem. Here is some output to illustrate the problem: (As you can see I can dig through the authoritative name servers by hand, so the question is why named isn't able to do resolve the address by itself...)
[leonard@firewall leonard]$ nslookup pop3.freeler.n Server: localhost Address: 127.0.0.1 *** localhost can't find pop3.freeler.nl: No response from server [leonard@firewall leonard]$ dig @a.root-servers.net pop3.freeler.nl ; <<>> DiG 8.3 <<>> @a.root-servers.net pop3.freeler.nl ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 6 ;; QUERY SECTION: ;; pop3.freeler.nl, type = A, class = IN ;; AUTHORITY SECTION: nl. 2D IN NS AUTH02.NS.UU.NET. nl. 2D IN NS NS2.NIC.FR. nl. 2D IN NS NS.DOMAIN-REGISTRY.nl. nl. 2D IN NS NS.RIPE.NET. nl. 2D IN NS SUNIC.SUNET.SE. nl. 2D IN NS NS2.DOMAIN-REGISTRY.nl. ;; ADDITIONAL SECTION: AUTH02.NS.UU.NET. 2D IN A 198.6.1.82 NS2.NIC.FR. 2D IN A 192.93.0.4 NS.DOMAIN-REGISTRY.nl. 2D IN A 193.176.144.2 NS.RIPE.NET. 2D IN A 193.0.0.193 SUNIC.SUNET.SE. 2D IN A 192.36.125.2 NS2.DOMAIN-REGISTRY.nl. 2D IN A 193.176.144.130 ;; Total query time: 154 msec ;; FROM: firewall to SERVER: a.root-servers.net 198.41.0.4 ;; WHEN: Thu Jul 11 15:51:10 2002 ;; MSG SIZE sent: 33 rcvd: 284 [leonard@firewall leonard]$ dig @auth02.ns.uu.net pop3.freeler.nl ; <<>> DiG 8.3 <<>> @auth02.ns.uu.net pop3.freeler.nl ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 0 ;; QUERY SECTION: ;; pop3.freeler.nl, type = A, class = IN ;; AUTHORITY SECTION: freeler.nl. 4D IN NS pridnsenv1.svr.pol.co.uk. freeler.nl. 4D IN NS pridnsenv2.svr.pol.co.uk. ;; Total query time: 143 msec ;; FROM: firewall to SERVER: auth02.ns.uu.net 198.6.1.82 ;; WHEN: Thu Jul 11 15:51:29 2002 ;; MSG SIZE sent: 33 rcvd: 96 [leonard@firewall leonard]$ dig @pridnsenv1.svr.pol.co.uk pop3.freeler.nl ; <<>> DiG 8.3 <<>> @pridnsenv1.svr.pol.co.uk pop3.freeler.nl ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 13, ADDITIONAL: 0 ;; QUERY SECTION: ;; pop3.freeler.nl, type = A, class = IN ;; ANSWER SECTION: pop3.freeler.nl. 4H IN CNAME pop-env.svr.pol.co.uk. ;; AUTHORITY SECTION: . 165w2d9h46m39s IN NS A.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS B.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS C.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS D.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS E.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS F.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS G.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS H.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS I.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS J.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS K.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS L.ROOT-SERVERS.NET. . 165w2d9h46m39s IN NS M.ROOT-SERVERS.NET. ;; Total query time: 98 msec ;; FROM: firewall to SERVER: pridnsenv1.svr.pol.co.uk 213.218.77.20 ;; WHEN: Thu Jul 11 15:51:53 2002 ;; MSG SIZE sent: 33 rcvd: 279 [leonard@firewall leonard]$ nslookup pop3.freeler.nl Server: localhost Address: 127.0.0.1 Non-authoritative answer: Name: pop-env.svr.pol.co.uk Address: 213.218.77.91 Aliases: pop3.freeler.nl Bye, Leonard. _______________________________________________ Redhat-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
