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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We are facing an intermittent resolving problems on several domains. While debugging the issue we found the below failures <o:p></o:p></p><p class=MsoNormal>Can you please help?<o:p></o:p></p><p class=MsoNormal>Kindly note that the number of recursive clients is increasing during the problem : recursive clients: 3700/14900/15000<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><b><span style='mso-list:Ignore'>1-<span style='font:7.0pt "Times New Roman"'> </span></span></b><![endif]><b>dig: couldn't get address for 'k.gtld-servers.net': failure<o:p></o:p></b></p><p class=MsoNormal>;; global options: printcmd<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS f.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS g.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS h.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS i.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS j.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS k.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS l.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS m.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS a.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS b.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS c.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS d.root-servers.net.<o:p></o:p></p><p class=MsoNormal>. 518011 IN NS e.root-servers.net.<o:p></o:p></p><p class=MsoNormal>;; Received 512 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>com. 172800 IN NS k.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS c.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS d.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS g.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS f.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS e.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS j.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS b.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS h.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS m.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS a.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS l.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>com. 172800 IN NS i.gtld-servers.net.<o:p></o:p></p><p class=MsoNormal>;; Received 493 bytes from 192.5.5.241#53(f.root-servers.net) in 64 ms<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>dig: couldn't get address for 'k.gtld-servers.net': failure<o:p></o:p></b></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><b><span style='mso-list:Ignore'>2-<span style='font:7.0pt "Times New Roman"'> </span></span></b><![endif]><b>named_dump.db<o:p></o:p></b></p><p class=MsoListParagraph><o:p> </o:p></p><p class=MsoNormal>; ns1lo6.example.com [v4 TTL 167] [v6 TTL 167] [<b>v4 failure</b>] [v6 failure]<o:p></o:p></p><p class=MsoNormal>; ns2nj.example.com [v4 TTL 167] [v6 TTL 167] [<b>v4 failure</b>] [v6 failure]<o:p></o:p></p><p class=MsoNormal>; ns2dc2.example.com [v4 TTL 167] [v6 TTL 2] [<b>v4 not_found</b>] [v6 nxrrset]<o:p></o:p></p><p class=MsoNormal>; ns2lo6.example.com [v4 TTL 167] [v6 TTL 167] [<b>v4 failure</b>] [v6 failure]<o:p></o:p></p><p class=MsoNormal>; ns1nj.example.com [v4 TTL 167] [v6 TTL 167] [<b>v4 failure</b>] [v6 failure]<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><b><span style='mso-list:Ignore'>3-<span style='font:7.0pt "Times New Roman"'> </span></span></b><![endif]><b>ServerFAIL <o:p></o:p></b></p><p class=MsoListParagraph><o:p> </o:p></p><p class=MsoNormal>; <<>> DiG 9.8.0 <<>> www.example.com<o:p></o:p></p><p class=MsoNormal>;; global options: +cmd<o:p></o:p></p><p class=MsoNormal>;; Got answer:<o:p></o:p></p><p class=MsoNormal>;; ->>HEADER<<- opcode: QUERY, status: <b>SERVFAIL</b>, id: 58716<o:p></o:p></p><p class=MsoNormal>;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Daniel <o:p></o:p></span></p></div></body></html>