<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am running into a problem that I think is caused by either a misconfiguration in Bind9, our Cisco NAT, or perhaps both.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The scenario:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We host our own sites locally, including internal and external DNS. The external dns servers are delegated for reverse lookups. The NAT is a static one.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>When I am on our internal network, I am able to query both servers and get the appropriate external ip address. However, when I try to do the same thing externally I get “Question section mismatch: got 6.1.1.10.in-addr.arpa/PTR/IN.” <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Some online tools will resolve the public ip to the appropriate hostname, but they will also show the ip as 10.1.1.6. Normally this wouldn’t be an issue except that I think it is the reason for some emails not being delivered.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any help or guidance is greatly appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>John <o:p></o:p></p></div></body></html>