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<body class='hmmessage'><div dir='ltr'>I have a confusion on how the clients respond to and cache when particularly we receive negative replies from a DNS Server, particularly NXDOMAIN or SERVFAIL responses<br><br>on the DNS Zone file we have these records<br>$ORIGIN e164.arpa.<br>@ IN SOA picardvm2.e164.arpa. e164-contacts.e164.arpa. (<br> 2002022404 ; serial<br> 3H ; refresh<br> 15 ; retry<br> 1w ; expire<br> <b>3h</b> ; minimum<br> )<br><br>so 3h is basically the amount of time clients are asked to cache negative results.<br><br>Now on the client side at lwresd.conf, if I have <br><br>max-ncache-ttl 300<br><br>Will the client override the default 3h value sent as response from the DNS Sever for the zone e164.arpa<br><br><br>How are Negative responses usually cached?<br><br>Thanks<br>Harshith<br> </div></body>
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