<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1502394415425_14778">Hi All,</div><div id="yui_3_16_0_ym19_1_1502394415425_14778"><br></div><div id="yui_3_16_0_ym19_1_1502394415425_14778">We are experiencing a weird issue for the past week or two. </div><div id="yui_3_16_0_ym19_1_1502394415425_14778"><br></div><div id="yui_3_16_0_ym19_1_1502394415425_14778" dir="ltr"><span style="color: rgb(36, 39, 41); font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 15px; line-height: 19.5px;" id="yui_3_16_0_ym19_1_1502394415425_14820">We run bind9 on RHEL/CentOS and one of our international offices that has their own auth and caching servers cannot resolve lenovo.com for some odd reason. If that office clients use google DNS it works but using their own DNS caching servers, it cant resolve. Commands dig and nslookup give a timeout. Although dig with trace is able to get to the final answer. Nothing in the logs indicate an issue. Also, this is the only address that cant resolve, everything else works fine.</span><br></div><div id="yui_3_16_0_ym19_1_1502394415425_14778" dir="ltr"><span style="color: rgb(36, 39, 41); font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 15px; line-height: 19.5px;" id="yui_3_16_0_ym19_1_1502394415425_14869">We've contacted the ISP to make sure nothing is being blocked or anything, and thats all clear. The network team has confirmed they haven't done anything on the edge devices or any firewall rule modifications which can cause it. </span></div><div id="yui_3_16_0_ym19_1_1502394415425_14778" dir="ltr"><span style="color: rgb(36, 39, 41); font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 15px; line-height: 19.5px;"><br></span></div><div id="yui_3_16_0_ym19_1_1502394415425_14778" dir="ltr"><span style="color: rgb(36, 39, 41); font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 15px; line-height: 19.5px;">Any ideas please???</span></div></div></body></html>