<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>hehehe,</div><div><br></div><div><a href="http://www.zytrax.com/books/dns/ch7/hkpng.html#max-ncache-ttl">http://www.zytrax.com/books/dns/ch7/hkpng.html#max-ncache-ttl</a></div><div><br></div><div>i found zytrax site is really helpful<br></div><div><br></div><div><br></div><div><span name="x"></span><div>Regards<br>-Renald-</div><span name="x"></span><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"John W. Blue" <john.blue@rrcic.com><br><b>To: </b>"A. Renald Niswady" <renaldre@orion.net.id>, "blrmaani" <blrmaani@gmail.com><br><b>Cc: </b>comp-protocols-dns-bind@isc.org<br><b>Sent: </b>Wednesday, March 2, 2016 2:27:49 PM<br><b>Subject: </b>RE: what does "max-ncache-ttl 0;" mean?<br><div><br></div>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Now quote your source.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">;)</span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> bind-users-bounces@lists.isc.org [mailto:bind-users-bounces@lists.isc.org]
<b>On Behalf Of </b>A. Renald Niswady<br>
<b>Sent:</b> Wednesday, March 02, 2016 1:23 AM<br>
<b>To:</b> blrmaani<br>
<b>Cc:</b> comp-protocols-dns-bind@isc.org<br>
<b>Subject:</b> Re: what does "max-ncache-ttl 0;" mean?</span></p>
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<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:black">max-ncache-ttl</span></b><span style="font-family:"Arial",sans-serif;color:black"> sets the maximum time (in seconds) for which the server will cache negative (NXDOMAIN) answers
(positives are defined by <a href="http://www.zytrax.com/books/dns/ch7/hkpng.html#max-cache-ttl" target="_blank">
max-cache-ttl</a>). The default max-ncache-ttl is 10800 seconds (3 hours). max-ncache-ttl cannot exceed 7 days and will be silently truncated to 7 days if set to a greater value. This statement may be used in
<a href="http://www.zytrax.com/books/dns/ch7/view.html" target="_blank">view</a> or a global <a href="http://www.zytrax.com/books/dns/ch7/options.html" target="_blank">
options</a> clause.</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Regards,<br>
A. Renald Niswady<br>
[NOC-System] Orion Cyber Internet</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">PT Orion Cyber Internet</span><span style="font-family:"Arial",sans-serif;color:black"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Gedung Cyber Lt. 1 Jl. Kuningan Barat No. 8, Jakarta Selatan 12710</span><span style="font-family:"Arial",sans-serif;color:black"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Telp: 021 5265566 - Fax: 021 6280883</span><span style="font-family:"Arial",sans-serif;color:black"><br>
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</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Internet Access, Webhosting, Colocation, Games and More.</span><span style="font-family:"Arial",sans-serif;color:black"></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Helvetica",sans-serif;color:black">From:
</span></b><span style="font-family:"Helvetica",sans-serif;color:black">"blrmaani" <<a href="mailto:blrmaani@gmail.com" target="_blank">blrmaani@gmail.com</a>><br>
<b>To: </b><a href="mailto:comp-protocols-dns-bind@isc.org" target="_blank">comp-protocols-dns-bind@isc.org</a><br>
<b>Sent: </b>Wednesday, March 2, 2016 2:13:29 PM<br>
<b>Subject: </b>what does "max-ncache-ttl 0;" mean?</span></p>
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<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif;color:black">man pages for named.conf says "max-ncache-ttl <integer>" and only talks about default values and max values - no mention of minimum-value.
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<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif;color:black">Does "max-ncache-ttl 0;" mean never cache negative queries (queries resulting in NXDOMAIN) or does it mean cache negative queries forever?</span></p>
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<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif;color:black">Too lazy to test this option or look bind code :), hence posting here - apologies in advance..!!</span></p>
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<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif;color:black">Blr<br>
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