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1answer
40 views

Why is host so much slower than dig on some queries?

When querying a particular address, dig as run against the resolvers listed in /etc/resolv.conf will return NXDOMAIN nice and quickly where host will take a while. $ dig @<resolver> ...
1
vote
2answers
103 views

Debian resolver adds domain and I don't want that

I have the following problem: if I ping a non existent domain name I get a reply from an IP address # ping nosuchdomain.common PING nosuchdomain.common.myrealdomain.com (192.168.1.1) 56(84) bytes of ...
1
vote
1answer
100 views

How can I specify nameserver's port number in osx? [duplicate]

In resolver manual, it said: The address may optionally have a trailing dot followed by a port number. For example, 10.0.0.17.55 specifies that the nameserver at 10.0.0.17 uses port 55. But it ...
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votes
2answers
1k views

Replace DNS on Openvpn client without redirect-gateway

I am trying to push DNS to the client with OpenVPN server with config: push "dhcp-option DNS 192.168.x.x" It is working well, but what I really need is that during the VPN connection I do not ...
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3answers
483 views

Multiple servers for resolving different domains

I was wondering is there a way to configure a linux or windows machine to use separate nameservers depending on what domain is being queried. Like for internal.example.com it resolves to 192.168.10.7 ...
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2answers
143 views

Looking for Iterative Resolver

I am looking for an Iterative Resolver server - a server that would handle the DNS resolutions for PC users in an environment. I am well aware of the Microsoft DNS and Bind, and also of free services ...
0
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1answer
330 views

Resolver Timeouts in Bind 10

Is there any detail on how bind 10 handles resolver timeouts? The latest info I could find was on Bind 8.2.1+ http://fengnet.com/book/DNS.and.BIND.5th.Edition/dns5-CHP-6-SECT-2.html The resolver ...
0
votes
1answer
864 views

Cannot resolve Hostname to IP, but IP to hostname works

I have deployed a bunch of windows server VMs on a cloud hosting service. These machines are all joined to a domain controller on the same service, which also hosts DNS. All of the domain-joined ...
2
votes
2answers
171 views

Where can I find a List of Public DNS Servers/Resolvers [closed]

I am looking for a site or service that provides list of public DNS servers (or resolvers) around the world (besides Google/Opendns).
2
votes
2answers
310 views

DNS Resolver Speed Techniques

I recently received a reply to my concerns about some DNS servers being slower than others despite all servers being anycast: In practice, most resolvers won't be impacted by the slower paths to ...
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2answers
1k views

DNS Resolver Timeout Mechanism

Do DNS resolvers (the ones at the ISP or Opend DNS or Google) have specific timeout period of waiting for a server to respond? If so is it in an RFC or is it just custom to each resolver? I heard a ...
0
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2answers
4k views

Configure a Local DNS Resolver That Only Caches for a Short Period

I am working on an application that will be used to verify new domains are configured correctly as they're set up for hosting. Part of this checks the validity of SPF, DomainKey, DKIM records, etc. ...
3
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3answers
531 views

Dynamically updating resolvers listed in /etc/resolv.conf

I rent some Linux servers and the hosting company provides a set of eight DNS resolvers. The response speed varies from resolver to resolver and I periodically modify /etc/resolv.conf to get the best ...