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Theclaytons

152 posts

Master Geek


#277345 9-Oct-2020 07:11
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Hi,


 


I've got a strange issue with 2degrees DNS that I can't seem to get a straight answer from anyone from. The issue is with DNS propagation to Google (and a few other) DNS servers.


When I dig the scenicgroup.co.nz domain for any DNS record for some servers (most noticably Google) it does not return any records. For most o thge others it does. e.g.


 


scenicgroup.co.nz@8.8.4.4 (Default):  
dig +noadditional +noquestion +nocomments +nocmd +nostats scenicgroup.co.nz. @8.8.4.4


 


The same query from CloudFlare or Open DNS returns records as expected


scenicgroup.co.nz@1.1.1.1 (CloudFlare):  
dig +noadditional +noquestion +nocomments +nocmd +nostats scenicgroup.co.nz. @1.1.1.1
scenicgroup.co.nz. 300 IN A 119.47.120.70


scenicgroup.co.nz@208.67.222.222 (OpenDNS):  
dig +noadditional +noquestion +nocomments +nocmd +nostats scenicgroup.co.nz. @208.67.222.222
scenicgroup.co.nz. 300 IN A 119.47.120.70


I have logged 2 x tickets with 2degrees who have done nothing and logged a ticket with Google DNS bug tracker and I got this suggestion:


There appears to be some sort of rate limiting/firewalling/access control or similar on your authoritative servers.  From any IP controlled by Google that I've tried:



$ dig @ns3.snap.net.nzscenicgroup.co.nz. A
 
; <<>> DiG 9.16.6-Debian <<>> @ns3.snap.net.nzscenicgroup.co.nz. A
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 1449
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
...

Your authoritative server refuses to answer, producing a SERVFAIL. 

This to me looks like an issue with 2degrees DNS servers - can anyone shed any further light on this issue? This is affecting email and web browsing where google DNS servers are set.


Any help greatly appreicated.


 


 


 


 


 


 


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freitasm
BDFL - Memuneh
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  #2581729 9-Oct-2020 07:49
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Is 2degrees your domain NS host?




 

 

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Theclaytons

152 posts

Master Geek


  #2581730 9-Oct-2020 07:50
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2Degrees is my NS provider.....

 
 
 
 


freitasm
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  #2581732 9-Oct-2020 07:51
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Any particular reason? Why not use Umbrellar - or even move DNS to Cloudflare?




 

 

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Theclaytons

152 posts

Master Geek


  #2581733 9-Oct-2020 07:52
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It is on the list to change, but that does not fix my current problem quickly

freitasm
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  #2581734 9-Oct-2020 07:54
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Changing NS is probably quicker than waiting for the ISP to change their systems.

It could be rate limiting in an attempt to prevent DDoS in which case it will be a lengthy process to change.




 

 

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aspired
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  #2581755 9-Oct-2020 08:58
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Hi

 

I've just fixed this one up, should be good now - there was an error in one of the scenicgroup.co.nz resource records, causing SERVFAIL for the whole zone.
I'll respond to your support ticket with further details.


freitasm
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  #2581758 9-Oct-2020 09:06
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Well, there you go... Thanks @aspired





 

 

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Geekzone broadband switch | Eletcricity comparison and switch | Hatch investment (NZ$ 10 bonus if NZ$100 deposited within 30 days) | Sharesies | Mighty Ape | Backblaze | Coinbase | TheMarket | My technology disclosure


 
 
 
 


Theclaytons

152 posts

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  #2581764 9-Oct-2020 09:10
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Thank you - seems to be resolving now.

 

 

 

Keen to undestand what change affected this.....


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