<div dir="ltr">I'm running BIND 9.11 on a CentOS 7 VM/  BIND is giving me the wrong answer for a single domain.  I've cleared cache, restarted BIND, restarted the server, and ensured that I don't have the referenced domain anywhere in my configuration hardcoded.<div><br></div><div>Please note the following query:</div><div><br></div><div><br></div><div><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">[root@myhost ~]# dig <a href="http://dor.state.ma.us">dor.state.ma.us</a> mx</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">; <<>> DiG 9.11.4-P2-RedHat-9.11.4-9.P2.el7 <<>> <a href="http://dor.state.ma.us">dor.state.ma.us</a> mx</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; global options: +cmd</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; Got answer:</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 41519</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><span lang="FR" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;color:inherit">;; OPT PSEUDOSECTION:</span></p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><span lang="FR" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;color:inherit">; EDNS: version: 0, flags:; udp: 4096</span></p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><span lang="FR" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;color:inherit">;; QUESTION SECTION:</span></p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;<a href="http://dor.state.ma.us">dor.state.ma.us</a>.               IN      MX</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; Query time: 17 msec</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; SERVER: 192.168.33.12#53(192.168.33.12)</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; WHEN: Tue Feb 09 21:01:28 EST 2021</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; MSG SIZE  rcvd: 44</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">[root@myhost ~]# dig <a href="http://dor.state.ma.us">dor.state.ma.us</a> mx +trace</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">; <<>> DiG 9.11.4-P2-RedHat-9.11.4-9.P2.el7 <<>> <a href="http://dor.state.ma.us">dor.state.ma.us</a> mx +trace</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; global options: +cmd</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://d.root-servers.net">d.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://i.root-servers.net">i.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://l.root-servers.net">l.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://g.root-servers.net">g.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://h.root-servers.net">h.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://e.root-servers.net">e.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://b.root-servers.net">b.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://a.root-servers.net">a.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://j.root-servers.net">j.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://m.root-servers.net">m.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://c.root-servers.net">c.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://f.root-servers.net">f.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      NS      <a href="http://k.root-servers.net">k.root-servers.net</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">.                       517726  IN      RRSIG   NS 8 0 518400 20210222230000 20210209220000 42351 . QCzDH8eHlHVbx4SxIIwk8xnk6ky/q+zRh8KAUfI98lqHcIP4NLxzCe6f mC2sNX1VcthEy6Lwnobm8OyJCRpNEHedYrS01aMhAVzUfM+/PJ9MWn0w SkmXxyZMJZXF/kl4GDNX0x/GW3+DkeTeZI9+B540Yvj47qJv2bD9nIQG NtE7bDze7bgMJkIuBlEzPfwp7YW5ud8qdC6HdUoEMqygwZcWAiQu8gpb q21z8W5hcdci1OouDFytNWrXAvfSsuR635+GzSj+RZjYo+447uP7lKsK N5aeVQ/BPh5jM32xVO+zwyp7v9Nky1vSP/BchMQ/3cqg3Ee7zobl8OQd CSd/SA==</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; Received 1097 bytes from 192.168.33.12#53(192.168.33.12) in 0 ms</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     172800  IN      NS      <a href="http://a.cctld.us">a.cctld.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     172800  IN      NS      <a href="http://b.cctld.us">b.cctld.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     172800  IN      NS      <a href="http://c.cctld.us">c.cctld.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     172800  IN      NS      <a href="http://e.cctld.us">e.cctld.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     172800  IN      NS      <a href="http://f.cctld.us">f.cctld.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     172800  IN      NS      <a href="http://k.cctld.us">k.cctld.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     86400   IN      DS      21364 8 1 260D0461242BCF8F05473A08B05ED01E6FA59B9C</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">us.                     <span lang="PT-BR" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;color:inherit">86400   IN      DS      21364 8 2 B499CFA7B54D25FDE1E6FE93076FB013DAA664DA1F26585324740A1E 6EBDAB26</span></p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><span lang="PT-BR" style="margin:0px;padding:0px;border:0px;font:inherit;vertical-align:baseline;color:inherit">us.                     86400   IN      RRSIG   DS 8 1 86400 20210222230000 20210209220000 42351 . rujvGB0s2bsqzBuzRliH6QK9vH84ETZV7gZMEhJyzMFofWhj9ZZaNWE/ VvdA9rC16IOEocvARv2rOqk7G3KTzdkHHZcwcZSQyVqsOIaIywGFuEgd viSXF6+M5MocUgEMp5dtt6SBLHG+lE/FV/3HylKSHsxdO/F6PeWKgcBZ D4lZQ6w5asmlbdKJKMhlWPp6UaxBE7ACaxndBQixoNqXQuPrXpXi1Fnj ntFtTfn57hMyrdTojIJ8X7/HKjCrbm3CL/WJ+VZR051OGCdZVjpUaDXR x7G9lDhu3K5clar9PGYyUJM7+RBKzrQJep7HrjL2nZdoTyfY4i33S+EZ sTlTOA==</span></p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">;; Received 697 bytes from 199.9.14.201#53(<a href="http://b.root-servers.net">b.root-servers.net</a>) in 3 ms</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"> </p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            7200    IN      NS      <a href="http://internet-dns1.state.ma.us">internet-dns1.state.ma.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            7200    IN      NS      <a href="http://internet-dns3.state.ma.us">internet-dns3.state.ma.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            7200    IN      NS      <a href="http://internet-dns2.state.ma.us">internet-dns2.state.ma.us</a>.</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            3600    IN      DS      41388 7 1 36D899932AF794EADD671161515E48FE829BB7FE</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            3600    IN      DS      41388 7 2 BBAB433D3853571F42516E70659AF1F85FA4FBA0FDFCEAD4D092592A 00C78769</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            3600    IN      DS      47628 7 1 485E0EE2F7C08FCE51D1E284321242930274833A</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            3600    IN      DS      47628 7 2 5379F9F747214E5A63416775396BCFF98FA4867AE66E09BCBEBE0DCC 1682C369</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)"><a href="http://state.ma.us">state.ma.us</a>.            3600    IN      RRSIG   DS 8 3 3600 20210307200856 20210205191212 53985 us. O8KqBHzlZsDqrZi0NQO4JEiN0b8j04/Lb8W2uVz5PyrAat1VgZKQ3Ws6 6PNtbZDMv6YX6QA8fWFLxNmeJ1/4L3wLu8EKYXaThA9Zxll7mKFj1iPf nqiVq5hOo8Ul3inmfM/tjCQ21IHc/v0JZygZNd/h0SxXWlQXi+W3G9LN +4z/qxtl9dGD1ka54Ln3MAVxB1Tp4pt0ri4qPLmfGKf/HA==</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">couldn't get address for '<a href="http://internet-dns1.state.ma.us">internet-dns1.state.ma.us</a>': not found</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">couldn't get address for '<a href="http://internet-dns3.state.ma.us">internet-dns3.state.ma.us</a>': not found</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">couldn't get address for '<a href="http://internet-dns2.state.ma.us">internet-dns2.state.ma.us</a>': not found</p><p class="gmail-x_MsoNormal" style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;color:rgb(32,31,30)">dig: couldn't get address for '<a href="http://internet-dns1.state.ma.us">internet-dns1.state.ma.us</a>': no more</p><br class="gmail-Apple-interchange-newline"></div><div><br></div><div>It fails on my production DNS system, yet if I run that query on another host, it works fine, with no issues.</div><div><br></div><div>Any idea why BIND would do this?</div><div><br></div><div>TIA</div></div>