[Pdns-users] Recursion issue--SERVFAIL then NOERROR totally at random

[bert hubert]

On Tue, Sep 09, 2014 at 05:16:24PM +0000, Todd Smith wrote:
> Rather long output here; however, it certainly looks like these results pretty much confirm that the issue is Toyota's, not ours:

> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: Resolved 'toyotasupplier.com.' NS gslb-ns1.toyota-na.com. to: 63.238.139.235
> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: Trying IP 63.238.139.235:53, asking 'toyotasupplier.com.|A'
> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: timeout resolving 
> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: Trying IP 12.169.52.62:53, asking 'toyotasupplier.com.|A'
> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: timeout resolving 
> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: Failed to resolve via any of the 2 offered NS at level 'toyotasupplier.com.'
> Sep  9 12:47:17 yoshi pdns_recursor[31821]: [10690756] toyotasupplier.com.: failed (res=-1)

You could try a traceroute to these two addresses to debug, but this indeed
does not look like a powerdns issue but more a networking issue!

Note that your timeout does appear to <1 second, you could try raising this
with 'network-timeout=2000' and see if this helps (2 seconds).

Good luck!

	Bert

> 
> -----Original Message-----
> From: pdns-users-bounces at mailman.powerdns.com [mailto:pdns-users-bounces at mailman.powerdns.com] On Behalf Of bert hubert
> Sent: Tuesday, September 09, 2014 1:11 PM
> To: Michael Loftis
> Cc: pdns-users at mailman.powerdns.com
> Subject: Re: [Pdns-users] Recursion issue--SERVFAIL then NOERROR totally at random
> 
> Well, as long as one server works you should get an answer.
> 
> Try setting a trace-regex on toyota and see what your powerdns reports!
> 
> http://doc.powerdns.com/html/rec-control.html - trace-regex
> 
> 	Bert
> 
> On Tue, Sep 09, 2014 at 10:06:03AM -0700, Michael Loftis wrote:
> > On Tue, Sep 9, 2014 at 9:55 AM, Brian Menges <bmenges at gogrid.com> wrote:
> > > I’d say it’s on Toyota’s end:
> > >
> > >
> > 
> > Same here gslb-ns1.toyota-na.com not responding (Comcast, Seattle, WA)
> > 
> > _______________________________________________
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> > Pdns-users at mailman.powerdns.com
> > http://mailman.powerdns.com/mailman/listinfo/pdns-users
> 
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