Dns issues with one domain (Resolved)

i'm currently having dns issues with one domain, in that it won't resolve when I use bt's dns servers.
The domain is owned by a friend in the US who runs his own server for irc, web, and I also have a server that is on his connection, and resolves fine from other machines on different networks, and also resolves fine when I set windows to use the opendns servers, but when it's set to either my routers ip (using bt's dns), or set to automatic (using bt's dns via the homehub), this one domain will not resolve.
I'm pretty certain it's not a windows issue, as it's a clean install of windows 7 that I did yesterday. I've tried rebooting the homehub, and also flushing my dns on windows, but this has not solved the issue.
As I say, it resolves fine on other networks, and also when I use the opendns servers, so I know it's definately a dns issue.
Using bt's dns servers:
C:\Users\admin>ping chatnsn.com
Ping request could not find host chatnsn.com. Please check the name and try agai
n.
Using opendns:
C:\Users\admin>ping chatnsn.com
Pinging chatnsn.com [68.51.24.74] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 68.51.24.74:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
(The timeouts are normal...he has his router set to not respond to ping requests).
Has anyone got any ideas on how to sort this out? Preferably without having to phone the helpdesk...lets just say i've done it in the past, and according to the poeple I spoke to in india, I knew nothing about my own systems, and it was a problem at my end...which was not the case, and I proved this several times.
Edit: This issue appears to have resolved itself, and the domain is now resolving again using the homehub for dns resolution.

Hi,
When NSLOOKUP starts, before anything else, it checks the computer's network configuration to determine the IP address of the DNS server that the computer uses.
Then it does a reverse DNS lookup on that IP address to determine the name of the DNS server.
If reverse DNS for that IP address is not setup correctly, then NSLOOKUP cannot determine the name associated with the IP address.
http://support.simpledns.com/kb/a90/nslookup-cant-find-server-name___-default-server-unknown.aspx
Also refer to:
How to fix NSLOOKUP Default Server: UnKnown?
http://www.randika.info/2013/01/how-to-fix-nslookup-default-server.html
Regards.
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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    down vote
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    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    C:\Users\G>
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    Many thanks in advance.

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      TCP    0.0.0.0:30004          0.0.0.0:0              LISTENING       4788
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      TCP    0.0.0.0:30021          0.0.0.0:0              LISTENING       4788
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      TCP    0.0.0.0:30039          0.0.0.0:0              LISTENING       4788
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      TCP    0.0.0.0:30084          0.0.0.0:0              LISTENING       4788
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      TCP    0.0.0.0:30085          0.0.0.0:0              LISTENING       4788
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      TCP    0.0.0.0:30094          0.0.0.0:0              LISTENING       4788
     [VirtualBox.exe]
      TCP    0.0.0.0:30095          0.0.0.0:0              LISTENING       4788
     [VirtualBox.exe]
      TCP    0.0.0.0:30096          0.0.0.0:0              LISTENING       4788
     [VirtualBox.exe]
      TCP    0.0.0.0:30097          0.0.0.0:0              LISTENING       4788
     [VirtualBox.exe]
      TCP    0.0.0.0:30098          0.0.0.0:0              LISTENING       4788
     [VirtualBox.exe]
      TCP    0.0.0.0:30099          0.0.0.0:0              LISTENING       4788
     [VirtualBox.exe]
      TCP    0.0.0.0:30101          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30102          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30103          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30104          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30105          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30106          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30107          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30108          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30109          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30110          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30111          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30112          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30113          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30114          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30115          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30116          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30117          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30118          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30119          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30120          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30121          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30139          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30180          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30181          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30182          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30183          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30184          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30185          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30186          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30187          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30188          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30189          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30190          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30191          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30192          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30193          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30194          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30195          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30196          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30197          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30198          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30199          0.0.0.0:0              LISTENING       4812
     [VirtualBox.exe]
      TCP    0.0.0.0:30201          0.0.0.0:0              LISTENING       4796
     [VirtualBox.exe]
      TCP    0.0.0.0:30239          0.0.0.0:0              LISTENING       4796
     [VirtualBox.exe]
      TCP    0.0.0.0:33306          0.0.0.0:0              LISTENING       4796
     [VirtualBox.exe]
      TCP    0.0.0.0:49152          0.0.0.0:0              LISTENING       440
     [wininit.exe]
      TCP    0.0.0.0:49153          0.0.0.0:0              LISTENING       880
      eventlog
     [svchost.exe]
      TCP    0.0.0.0:49154          0.0.0.0:0              LISTENING       1000
      Schedule
     [svchost.exe]
      TCP    0.0.0.0:49156          0.0.0.0:0              LISTENING       508
     [lsass.exe]
      TCP    0.0.0.0:49157          0.0.0.0:0              LISTENING       500
     [services.exe]
      TCP    0.0.0.0:49158          0.0.0.0:0              LISTENING       3048
      PolicyAgent
     [svchost.exe]
      TCP    127.0.0.1:8361         127.0.0.1:49364        ESTABLISHED     3080
     [sc_serv.exe]
      TCP    127.0.0.1:14147        0.0.0.0:0              LISTENING       1444
     [FileZilla Server.exe]
      TCP    127.0.0.1:14147        127.0.0.1:49162        ESTABLISHED     1444
     [FileZilla Server.exe]
      TCP    127.0.0.1:49162        127.0.0.1:14147        ESTABLISHED     3156
     [FileZilla Server Interface.exe]
      TCP    127.0.0.1:49212        127.0.0.1:49213        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49213        127.0.0.1:49212        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49214        127.0.0.1:49215        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49215        127.0.0.1:49214        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49216        127.0.0.1:49217        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49217        127.0.0.1:49216        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49218        127.0.0.1:49219        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49219        127.0.0.1:49218        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49220        127.0.0.1:49221        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49221        127.0.0.1:49220        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49222        127.0.0.1:49223        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49223        127.0.0.1:49222        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49224        127.0.0.1:49225        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49225        127.0.0.1:49224        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49226        127.0.0.1:49227        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49227        127.0.0.1:49226        ESTABLISHED     4288
     [java.exe]
      TCP    127.0.0.1:49364        127.0.0.1:8361         ESTABLISHED     3100
     [Instore_Radioboss.exe]
      TCP    192.168.1.87:139       0.0.0.0:0              LISTENING       4
     Can not obtain ownership information
      TCP    192.168.1.87:3389      217.156.134.12:22971   ESTABLISHED     1104
      CryptSvc
     [svchost.exe]
      TCP    192.168.1.87:8360      81.148.248.221:1026    ESTABLISHED     3080
     [sc_serv.exe]
      TCP    192.168.1.87:25565     0.0.0.0:0              LISTENING       4288
     [java.exe]
      TCP    192.168.1.87:50644     37.139.0.151:8233      ESTABLISHED     4796
     [VirtualBox.exe]
      TCP    192.168.1.87:51019     81.27.96.46:21         TIME_WAIT       0
      TCP    192.168.1.87:53126     192.168.1.86:445       ESTABLISHED     4
     Can not obtain ownership information
      TCP    192.168.1.87:60462     192.168.1.86:445       CLOSE_WAIT      4
     Can not obtain ownership information
      TCP    192.168.1.87:65029     37.139.0.151:8231      ESTABLISHED     4796
     [VirtualBox.exe]
      TCP    192.168.56.1:139       0.0.0.0:0              LISTENING       4
     Can not obtain ownership information
      TCP    [::]:21                [::]:0                 LISTENING      
    1444
     [FileZilla Server.exe]
      TCP    [::]:25                [::]:0                 LISTENING      
    1692
     [MESMTPC.EXE]
      TCP    [::]:80                [::]:0                 LISTENING      
    4
     Can not obtain ownership information
      TCP    [::]:135               [::]:0                 LISTENING      
    752
      RpcSs
     [svchost.exe]
      TCP    [::]:445               [::]:0                 LISTENING      
    4
     Can not obtain ownership information
      TCP    [::]:3306              [::]:0                 LISTENING      
    1756
     [mysqld.exe]
      TCP    [::]:3389              [::]:0                 LISTENING      
    1104
      CryptSvc
     [svchost.exe]
      TCP    [::]:30239             [::]:0                 LISTENING      
    4796
     [VirtualBox.exe]
      TCP    [::]:49152             [::]:0                 LISTENING      
    440
     [wininit.exe]
      TCP    [::]:49153             [::]:0                 LISTENING      
    880
      eventlog
     [svchost.exe]
      TCP    [::]:49154             [::]:0                 LISTENING      
    1000
      Schedule
     [svchost.exe]
      TCP    [::]:49156             [::]:0                 LISTENING      
    508
     [lsass.exe]
      TCP    [::]:49157             [::]:0                 LISTENING      
    500
     [services.exe]
      TCP    [::]:49158             [::]:0                 LISTENING      
    3048
      PolicyAgent
     [svchost.exe]
      TCP    [::1]:14147            [::]:0                 LISTENING       1444
     [FileZilla Server.exe]
      UDP    0.0.0.0:123            *:*                                   
    964
      W32Time
     [svchost.exe]
      UDP    0.0.0.0:500            *:*                                   
    1000
      IKEEXT
     [svchost.exe]
      UDP    0.0.0.0:3702           *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    0.0.0.0:3702           *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    0.0.0.0:4500           *:*                                   
    1000
      IKEEXT
     [svchost.exe]
      UDP    0.0.0.0:5355           *:*                                   
    1104
      Dnscache
     [svchost.exe]
      UDP    0.0.0.0:53274          *:*                                   
    4780
     [VirtualBox.exe]
      UDP    0.0.0.0:53727          *:*                                   
    4788
     [VirtualBox.exe]
      UDP    0.0.0.0:54111          *:*                                   
    4828
     [VirtualBox.exe]
      UDP    0.0.0.0:54112          *:*                                   
    4828
     [VirtualBox.exe]
      UDP    0.0.0.0:54113          *:*                                   
    4780
     [VirtualBox.exe]
      UDP    0.0.0.0:55421          *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    0.0.0.0:58596          *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    0.0.0.0:59838          *:*                                   
    4812
     [VirtualBox.exe]
      UDP    0.0.0.0:62498          *:*                                   
    4796
     [VirtualBox.exe]
      UDP    127.0.0.1:1900         *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    127.0.0.1:55045        *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    192.168.1.87:137       *:*                                   
    4
     Can not obtain ownership information
      UDP    192.168.1.87:138       *:*                                   
    4
     Can not obtain ownership information
      UDP    192.168.1.87:1900      *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    192.168.1.87:55043     *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    192.168.56.1:137       *:*                                   
    4
     Can not obtain ownership information
      UDP    192.168.56.1:138       *:*                                   
    4
     Can not obtain ownership information
      UDP    192.168.56.1:1900      *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    192.168.56.1:55044     *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    [::]:123               *:*                                   
    964
      W32Time
     [svchost.exe]
      UDP    [::]:500               *:*                                   
    1000
      IKEEXT
     [svchost.exe]
      UDP    [::]:3702              *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    [::]:3702              *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    [::]:4500              *:*                                   
    1000
      IKEEXT
     [svchost.exe]
      UDP    [::]:5355              *:*                                   
    1104
      Dnscache
     [svchost.exe]
      UDP    [::]:55422             *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    [::]:58597             *:*                                   
    964
      EventSystem
     [svchost.exe]
      UDP    [::1]:1900             *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    [::1]:55042            *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    [fe80::59f:484a:827f:42ba%11]:1900  *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    [fe80::59f:484a:827f:42ba%11]:55040  *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    [fe80::11a6:2283:bc40:c0cb%16]:1900  *:*                                   
    4172
      SSDPSRV
     [svchost.exe]
      UDP    [fe80::11a6:2283:bc40:c0cb%16]:55041  *:*                                   
    4172
      SSDPSRV
     [svchost.exe]

  • Internet DHCP/DNS issues with WRT1900ac

    I've had a WRT1900ac now for about 2 weeks and the problems seem to be escalating.  Need help.  And yes, I've already read dozens of threads about these issues and nothing seems to be working.
    Most of the problems seem to be centered around this DHCP/DNS issue that so many have been reporting.
    First, the symptoms:
    Galaxy S4 phones when connected via wifi have some apps that don't update (facebook and google play)
    Some computers (both Win 7) will connect to the network just fine, both wired and wireless - but won't be able to get to the internet
    I've spent the last 2-3 days of my life reading forums and trying all sorts of things to get this to work properly (like my old router) and I'm still stuck.  Some things I've tried:
    Firmware is up-to-date (latest version: 1.1.8.164461)
    Manually assigned static DNS in router config settings (connectivity -> local network) to various combinations including the router address, 8.8.8.8, 8.8.4.4, 75.75.75.75, 75.75.76.76 (I have comcast), OpenDNS addresses, etc.  I read that the router address is not needed, so I stopped including it.
    I manually assigned IPs and DNS on the Galaxy S4 phones and that seemed to work... but also seems unnecessary.
    I've reserved DHCP addresses on the computers in question, that didn't seem to work, I also manually set DNS on one of the comupters (can't on the other... long story/not my computer) and that worked for a while and then stopped working.
    The only way to get one of the computers on the internet now is to turn on the guest network (even though the computer is hard wired to the router), connect, and then the wired network works.  No clue why this is, but my guess is that it needs the guest network for DNS, then it fails back over to the wired network.  Once that happens, I can actually turn off the wifi on the computer and everything works great... until I reboot.  Key point: I can't change any settings on that box other than entering in SSID/passphrase info for the wireless connection.  I can connect to the regular (non-Guest) wifi just fine - I just can't ever get to the internet.
    I've tried massaging DHCP settings on the router until I'm blue in the face - Static DNS, reserving DHCP addresses, hell I even put one of the computers in the DMZ to see if that would work and it still can't connect to the internet (it's worth noting that with my old router, Linksys WRT310N, the setup was literally plug-and-play - no hassle with any of this).
    I've tried countless router reboots, factory resets, turning off my modem and router for 2+ minutes, and nothing is working.
    I even read somewhere that if you modify your DHCP settings at all that the WRT1900ac stops doing DNS properly and breaks, so I even tried several "hard" factory resets and used all the default DHCP/DNS settings.  And it worked... for a few hours.
    Seriously, I'm at my wit's end.  I'm out a lot of money on this thing and it's been one headache after another.  Please help.

    I think for most people its a bad idea to hold out that hope, lol. It seems like a great piece of hardware but if you really need a router and don't want to have to 'play' with it, its probably not a good choice. I have an EA6900 that I am very happy with but it has the same restrictions as far as DNS and I really hate the idea that I am forced to use the smartwifi portal. I would really like for them to give me a choice of the old gui or the new one and let ME decide. Lots of routers to choose from out there now and new ones seem to be coming out all the time so do some reading and see if something suits you better. Good luck!

  • DNS issues with kerio

    Hello,
    We are running the following setup:
    cisco firewall
    dmz lan
    xserve(kerio/fto) workstations
    So basicly randomly the computers accesing the dns name mail.domainname.com(172.16.2.2) gets directed too the xserve. And other times it gets directed too the cisco firewall (192.168.1.1).
    Any ideas why this happends? I found this in the DNS log while the 192.168.1.200 tried to connect too the dns.
    27-Apr-2010 12:50:59.115 client 192.168.1.200#65293: view com.apple.ServerAdmin.DNS.public: query (cache) 'maps.l.google.com/A/IN' denied

    Minigud wrote:
    Hoff,
    Thank you again for your quick reply.
    All the computers is running 10.6.3.
    You are correct, we are running a local and external dns server. One from our internet provider and one for our mailserver. Basicly we want mail.domain.com to work both on wireless devices when at the office and when outside of the office.
    I took some screenshots from our firewall aswell as the xserve DNS setup. Maybe you see something i don´t. The dhcp server here is the cisco router.
    http://bildr.no/view/636861
    Thanks again, i appriciate the help.
    What you are describing for your DNS setup is a common case called "Split Horizon DNS". I use this configuration on my own Mac network. Internally, all clients are set to only talk to my own internal DNS server. On my own internal DNS server I have defined records for my mail server, e.g. mail.mydomain.com to point to its public IP address. My ISP has a record which the rest of the world uses which also points the same name to the same public IP address.
    The servers are all set to use my internal DNS server in Network preferences in System Preferences, this includes my own DNS server which is also my Open Directory and DHCP server (yes this means it looks to itself). The DHCP server is set to only advertise my internal DNS server.
    My internal DNS server receives all DNS lookup requests, and can resolve itself my own domain, and forwards externally all other requests to be resolved by other DNS servers.
    In case you do have two DHCP servers, what you could do, is at a suitable quiet time, temporarily shutdown the DHCP server you know you are running, and see if clients are still able to obtain a DHCP address. If they can this confirms there is another one running, if they cannot, then this would suggest you only have one DHCP server.
    Presumably you only have one DHCP subnet defined on your DHCP server?
    Note: If you have a Split Horizon configuration like this, you also need to internally define any other external addresses like www.mydomain.com so you can access your own website, even/especially if the website is hosted externally.
    When your clients are out of the office, they would be getting settings via a different DHCP server, which would include a different DNS server, and it would via your ISP find the external records.
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