[Pdns-users] Recursor reply SRVFAIL from the first NS server and does not try other NS servers

Mohamad F. Barham mbarham at birzeit.edu
Mon Apr 8 10:53:24 UTC 2019


I have pdns-recursor running on the campus, and I have issue with NS servers :

for example safariaquapark.com have 3 NS servers:

ns6 (down wright now)



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.

How to make sure that this will happen? , its not happening wright now

is there a timeout for each NS ? and an over all query  ttl?

[cid:image002.png at 01D327F4.25E9A910]

Mohamad Barham

System administrator | Information Technology Department

Birzeit University

P.O.Box. 14, Birzeit, Palestine

Tel: + 970 22982012 | Mob: +970 597 861929 | Ext: 5616

mbarham at birzeit.edu | www.birzeit.edu<http://www.birzeit.edu/>

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