Domain Name Service, a method of converting a textual doman name to an IP address

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Fast External DNS Servers and My Intranet

The local DNS servers, where I work, stink. They're absurdly slow and often completely fail to resolve web domains during certain periods of heavy sunspot activity. In response, I've just added ...
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1k views

Ping and curl resolve to one IP, dig/nslookup/host resolve to another

OK, I have a very interesting case. I have a custom DNS server that is vending out IP addresses to varying servers in my test network. If I use dig, nslookup, or host, it tells me that it's properly ...
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355 views

Local DNS server access delays

Access to a local DNS server is always delayed by ~1 second. I enabled the DNS server on OS-X Lion and it does indeed work. However when I query it using 'dig' (or nslookup) there is a delay of ...
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853 views

Is it possible to bypass a proxy when the proxy settings are set to Auto Proxy Config?

I've set up Automatic Proxy Configuration (PAC) in OSX Snow Leopard to point to a URL. I've also filled out the "Bypass proxy settings for these Hosts & Domains" box because I want to skip the ...
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67 views

Repeat DNS flushing required on El Capitan

I have a mid-2011 Mac Air running OS 10.11.3 and I repeatedly have to run a DNS flush to resolve issues connecting to the internet. This seems to be a recent problem and I don't know what has caused ...
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39 views

DNS fails over time. Reconnecting to wifi solves it momentarily

The DNS lookup fails after some time of being connected. I can get it back working if i reconnect to my wifi. However it seems to happen more frequently. I enabled debugging in the mDNS responder to ...
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83 views

Getting high ping when MacBook Air is connected to Wi-Fi

I have a 13" MacBook Air with Yosemite 10.10.2 installed: As soon as I connect it to my WiFi, I get a very high ping (1600 ms) on both my machines: Windows 7 PC and my MacBook. As a result browsing ...
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67 views

Custom nameservers, /etc/resolver/ and SRV records

I want to use a DNS server on my machine to resolve lookups for all names ending in .dev. I've created /etc/resolver/dev to do this, and checked that it works for A records: › dscacheutil -q host -a ...
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36 views

Macbook Pro 10.10.5 Can Only Connect to Large Sites like Google, StackExchange, Wikipedia

This strange connection issue has been very stubborn. In short, after every reboot I can access the entire internet for a short period of time. After a time (say 30 minutes) all but major websites ...
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50 views

MBP - have to re-enable Wi-Fi every 30 mins

I have a MacBook Pro running on El Capitan (but the issue was already present before the upgrade, so it's not related). I have the Mac since a bit less than a year. It is still running perfectly but ...
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86 views

How can I get OS X's Dynamic DNS client to register a local IP address?

Background: I'm essentially re-creating Back To My Mac. I have a VPN set-up on my VPS, handing out addresses in the 10.x.y.0/24 range, with BIND running and accessible at 10.x.y.1. There's a zone ...
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Device name on router is different than OS X hostname

There are tons of questions about changing a Mac hostname, and while I went through most of them, I could never find this nuanced answer: Why do routers always seems to receive the first hostname ...
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DNS resolution broken in El Capital with Thunderbolt Ethernet Adapter on Offline network

After upgrading to El Capitan how do I enable DNS resolution on an offline, internal computer network? Before upgrading to El Capitan I could connect to my internal network, set my DNS and search ...
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73 views

VPN connects, IP won't change : traffic issue

I spent too much time on this, so I'm asking you guys if you can figure it out. I can connect to my VPN, but my IP won't change (I can access the internet) and since P2P isn't working I guess the ...
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913 views

Make `hostname -f` return fully qualified hostname

How can i make hostname (i.e. the unix commandline tool hostname, invoked in terminal) return a hostname including the domain information? At the moment, hostname, hostname -f and hostname -s return ...
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33 views

DNS resolves incorrectly, even after purge

After changing a CNAME record on my DNS server, I am seeing issues with the DNS on my Macbook Air running OS X 10.10. Other computers on the same network resolves to the correct, new IP. $ host ...
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69 views

OSX Flush DNS without sudo

I have a Mac that keeps messing up its DNS (this may be a wider network issue, we have windows clients that are having problems too). Whilst I try to understand the DNS issue I'd like to set an 'icon' ...
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485 views

OS X 10.10.3 connects to wireless router but unable to resolve domain names

I can connect my daughter's MacBook to the wireless router but not browse the internet with two different browsers (Firefox and Safari). This is a recent development as she has successfully browsed ...
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71 views

How do I change the hostname resolution sequence in OSX?

I am a new Mac user with lots of Linux/UNIX experience. My MACBook gets its IP using DHCP. The OSX version involved in my question is 10.10.3. I am having a bit of a problem figuring out how to do ...
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64 views

OS 10.10 not connecting through proxy specified by its Internet name

My office proxy has always been specified with its IP address and everything worked fine. However, recently, the proxy was changed to use its Internet name, in the form xxxx-y.zzzz.com Since then, I ...
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594 views

yosemite DNS resolution woes over IPSec tunnels / VPN

I am connecting to a Cisco IPSec tunnel from MacOS to a hosted pfsense box that is running a number of other IPSec site-to-sites happily, and the DNS resolution is not working. I also am in full ...
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326 views

Yosemite: ssh slow to connect when using DNS alias

Since updating to Yosemite, ssh from my Mac to a DNS alias takes about 7-8 seconds. I've observed the following on multiple Macs running Yosemite. Assume I have a host name alpha, and a DNS alias to ...
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727 views

Why is my hostname resolution taking so long?

Several months ago I noticed that my text editor (emacs) and IDE (IntelliJ) were taking a really long time to start up. The time appeared to vary based on the DNS servers OS X was using. I was able ...
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Mac OS X Panther Server DNS settings

How do I change change the DNS time to live, TTL, settings using Mac OS X Panther Server?
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352 views

How to set custom DNS settings?

I'm trying to set my Macbook Pro to use Google's public DNS, but when I go to the DNS settings (System Preferences > Network > DNS) it will enter the new IP address but then immediately reverts it to ...
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350 views

iOS network connectivity on a local, isolated network with no DNS server

I have a problem with configuring my iPad to work on a local, isolated Wi-Fi network that does not have a DNS server on it. The problem is in how to convince the iPad that it is actually connected to ...
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62 views

Apple Developer DNS Broken

I'm trying to create a developer account at developer.apple.com, but every time I click "Register", it says the server at developercms.apple.com couldn't be found. Is this happening to anyone else? ...
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1k views

Authentication Server could not be contacted

Our OS X Server machine has had no issue at all with being in the Windows AD domain right up until we updated it to OS X 10.10. Now it behaves bizarrely, refuses to connect to our Exchange mail ...
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185 views

Does the Airport Extreme support wireless roaming and guest network?

I'm looking to purchase two Apple Airport Extreme base station units to use as wireless access points only. They will be connected via Ethernet to my network closet. Internet gateway is handled by my ...
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88 views

Changing /etc/hosts not getting affected

I have added the following line in my /etc/hosts: 127.0.0.1   myapp.corp.com so my full /etc/hosts looks like: 127.0.0.1 localhost 127.0.0.1   myapp.corp.com 255.255.255.255 broadcasthost ::1 ...
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149 views

Back to Mac service when using Unlocator DNS

I have a Mac Mini at home that I would like to connect to using the "Back to my Mac" service. Normally it works just fine. But if I update my Apple Airport Extreme with DNS from unlocator.com (or ...
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385 views

Troubleshooting DNS

I'm having a weird problem where the system-wide DNS resolution doesn't work, but I don't know how I could fix that, or even find a log (coming from Linux). I manually configured 8.8.8.8, 8.8.4.4 as ...
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185 views

DNS Lookup Failure on Terminal Only (Mavericks)

I recently did a clean install of Mavericks, and ever since I have, I've been having intermittent DNS lookup failures on the terminal only. Browsers work fine (Chrome, Safari). But nothing works ...
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How can I send an email from within iCloud.com using a different email address? [duplicate]

I have my own private domain hosting solution with email, for example, test@test.com. When I am using the iCloud.com website from my browser, let's say for creating a spreadsheet, I will want to shed ...
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1k views

How should I configure my VMware Fusion VM network connections?

I've been a long time user of VMware Fusion on my iMac and I've just bought a MacBook Pro to allow me to work on projects whilst I'm away from my desk. On my iMac, I have a few VMs, each with their ...
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355 views

Resolve domain name using the internal IP when inside the intranet?

I want to access a web server using the same domain name while I am inside the intranet but a different IP. Let's say that I register into a public DNS: mysrv-public.example.com public-ip ...
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6k views

DHCP and DNS fail to work in Mac OS X 10.8.2, still work in recovery mode

I've been most unfortunate to see my mid-2012 Macbook Air 11" running Mac OS X 10.8.2 stop properly receiving DHCP leases AND resolving DNS names to IPs. I know, there is 10.8.5, and Mavericks that ...
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336 views

How can I block a given DNS from being used?

When I get a list of DNSs that OS X is using, it shows 3: Two from my ISP, and one is 192.168.1.1. Is it possible to prevent OS X from using the third one?
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105 views

How do I include my own zone file in /etc/com.apple.named.proxy.conf

When I enable internet connection sharing, a local named DNS nameserver is started that uses the file /etc/com.apple.named.proxy.conf for configuration. My internet connection sharing is configured ...
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177 views

DNS resolution temporarily failing

Macbook air mid-2012 w/ Mountain Lion. Whenever I wakeup from a long sleep and also on some random moments when it's on, i get DNS resolution failures for every server, with nslookup saying ;; ...
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228 views

Lion server DNS problem with .private

I have just installed a lion server on my home network. I want to use it as a .private. Domain. I have implemented the VPN connection for external users via port fwd on my apple time machine router. ...
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AirPort Extreme, OS X Server, DHCP and Dynamic DNS

I have a AirPort Extreme and OS X Server (Mountain Lion). On my local network, I have a number of OS X, Windows, Ubuntu and other machines using DHCP to obtain network addresses. Almost all ...
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58 views

named (bind DNS) not quitting

I am trying to quit named, but it keeps popping up. I tried removing the configuration an key files, unloading it from launchd, you name it. Yet it keeps starting. How do I kill it permanently?
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452 views

Changing WiFi settings separately

I'm using 2 WiFi networks with my MacBook Air. I need to switch between them sometimes. The problem is one needs completely different settings from the other, and it looks like I can only make ...
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204 views

DNS issue with Microsoft Sharepoint

I am having this issue on my MacBook Air but not on my Windows machine or even my Windows virtual machine on the Macbook Air. Client uses Microsoft SharePoint for documents and logs. I was given two ...
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795 views

ping and browsers do not seem to use local DNS server? (or: mDNSResponder looses local dns server?)

(1) Stack Info DNS Server CentOS 5.6 64bit running dnsmasq 2.45 on IP 10.9.8.2. Serving as DNS-Only Server using it's local /etc/hosts. /etc/resolv.conf on this machine has Router Draytek ...
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Using dnsmasq when not connected to the Internet

I'm routing dns requests through dnsmasq so that domains I'm using for local development point to 127.0.0.1. This works great when I'm connected to the Internet via Wi-Fi or ethernet, but I start to ...
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Why opening a ssh connection to Lion is taking too long?

Why is SSH taking too long to open when I SSH to Lion. I have to wait ~30s to see the Password prompt. The DNS is working on the Lion server.
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130 views

How to resolve network issue or DNS to access web page on Snow Leopard Server?

I have my network setup like as follows: internet > router 1 > ethernet ports > switch > router 2 I have a Mac OS X Snow Leopard Server connected to "router 1", but it is so slow when accessing a ...
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1k views

Macbook can't resolve any domain names

I have a 13" Macbook running Snow Leopard 10.6.6 which is unable to go to any URL on either my office or hotel networks. I have no proxy or firewall enabled on the computer - and have connected to ...