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<p style="margin-top:0;margin-bottom:0">Dears,</p>
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<p style="margin-top:0;margin-bottom:0">I have pdns-recursor running on the campus, and I have issue with NS servers :</p>
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<p style="margin-top:0;margin-bottom:0">for example safariaquapark.com have 3 NS servers:</p>
<p style="margin-top:0;margin-bottom:0">ns6 (down wright now)</p>
<p style="margin-top:0;margin-bottom:0">ns4</p>
<p style="margin-top:0;margin-bottom:0">ns1</p>
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<p style="margin-top:0;margin-bottom:0">if my recursor ask ns6 it will wait till the end and reply SRVFAIL for the client, but it should try ns4, ns1 after ns6 fails.</p>
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<p style="margin-top:0;margin-bottom:0">How to make sure that this will happen? , its not happening wright now </p>
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<p style="margin-top:0;margin-bottom:0">is there a timeout for each NS ? and an over all query ttl?</p>
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<p><span style="font-size:10pt; color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p><span style="color:rgb(31,73,125)"><img width="105" height="42" alt="cid:image002.png@01D327F4.25E9A910" style="user-select: none;" src="https://mail.google.com/mail/u/0/?ui=2&ik=1662487e1c&view=fimg&th=1628b3ef9dc0c65b&attid=0.0.2&disp=emb&attbid=ANGjdJ_cmfugMC7S5sgxaBJg8zqL-vZu49uYKS8jH-vc1mSceIFYb5I7XUdMGWGc9Y3ChKtjvk-vr1--n7JT9sKXNdFDvK_YPZQltInjtkralz0Ko7DBf1t-gJKDS1A&sz=w210-h84&ats=1522829172823&rm=1628b3ef9dc0c65b&zw&atsh=1"></span><span style="font-size:10pt; color:rgb(31,73,125)"><u></u><u></u></span></p>
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<p><b><span style="font-size:10pt; color:rgb(31,73,125)">Mohamad Barham<u></u></span></b></p>
<p><span style="font-size:10pt; color:rgb(31,73,125)">System administrator | Information Technology Department<u></u><u></u></span></p>
<p><span style="font-size:10pt; color:rgb(31,73,125)">Birzeit University<u></u><u></u></span></p>
<p><span style="color:rgb(31,73,125); font-family:Calibri,sans-serif; font-size:13.3333px">P.O.Box. 14, Birzeit, Palestine</span><br>
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<span style="color:rgb(31,73,125); font-family:Calibri,sans-serif; font-size:13.3333px">Tel: + 970 22982012 | Mob: +970 597 861929 | Ext: 5616</span>
<p><span style="font-size:10pt; color:rgb(31,73,125)"><span style="color:blue">mbarham@birzeit.edu</span> | </span><span style="color:rgb(31,73,125)"><a href="http://www.birzeit.edu/" target="_blank" style="color:rgb(17,85,204)" id="LPNoLP"><span style="font-size:10pt; color:blue">www.birzeit.edu</span></a></span></p>
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