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[Solved] DNS-Problem with Nameserver ns2.heliohost.org


dl5ark1

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Server ns2.heliohost.org doesn't resolve the name dl5ark.heliohost.org:

 

nslookup

 

###################################

> server ns1.heliohost.org

Standardserver:  ns1.heliohost.org

Address:  65.19.143.3

 

> dl5ark.heliohost.org

Server:  ns1.heliohost.org

Address:  65.19.143.3

 

Name:    dl5ark.heliohost.org

Address:  64.62.211.134

 

> ftp.dl5ark.heliohost.org

Server:  ns1.heliohost.org

Address:  65.19.143.3

 

Name:    ftp.dl5ark.heliohost.org

Address:  64.62.211.134

 

###################################

> server ns2.heliohost.org

Standardserver:  ns2.heliohost.org

Address:  64.62.211.133

 

> dl5ark.heliohost.org

Server:  ns2.heliohost.org

Address:  64.62.211.133

 

*** dl5ark.heliohost.org was not found from ns2.heliohost.org: Non-existent domain.

 

> ftp.dl5ark.heliohost.org

Server:  ns2.heliohost.org

Address:  64.62.211.133

 

*** ftp.dl5ark.heliohost.org was not found from ns2.heliohost.org: Non-existent domain.

###################################

 

What´s wrong?
Edited by dl5ark1
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Well that one's new. NS1 is the one that's been giving us issues.

 

The domain dl5ark.heliohost.org has been synced onto NS2.

> dl5ark.heliohost.org
Server:  ns2.heliohost.org
Address:  64.62.211.133

Name:    dl5ark.heliohost.org
Address:  64.62.211.134

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(...) Anyways that hardly matters took ns1 is up and functional.

 

@sohamb03

 

For future reference... In such situations it DOES matter.

 

If one of the nameservers is not working at all (but the other is working properly) - there is no problem.

If both nameservers are online, but one have no records (or wrong records) for the domain name - there is problem: randomly in ~50% of cases we won't have access to the domain name (website, incomming mails etc.).

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Piotr GRD described exactly the issue we've been seeing for the past week until a few days ago. It's better for busted NSes to be down entirely, because if it times out, the requesting device just asks the next one in the list. If it gets an answer, it just assumes that the information received is correct.

 

NS1 was alive after Tommy came up, but until recently, had not been informed of most of the domains we have.

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