DNS can not be contacted

Discussion in 'DNS Server' started by Bob, Oct 17, 2006.

  1. Bob

    Bob Guest

    I am trying to connect a win 2k computer to the network. In the Computer
    Name Changes dialog box when I tell it to use the domain (companyname.com)
    it gives me an error of:

    "The following error occurred validating the name "companyname.com". This
    condition may be caused by a DNS lookup problem. The specified domain
    either does not exist or could not be contacted."

    Any suggestions?
     
    Bob, Oct 17, 2006
    #1
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  2. Bob

    T. Uranjek Guest

    Hi!

    You should set prefered DNS server on clinet to point to your domain DNS
    server. You should be able to ping DC by its FQDN (for example: ping
    dc.companyname.com) before you try to join computer to domain.

    You can also put NetBIOS name (companyname) in domain field and hope that
    your client will find domain with help of NetBIOS name resolution. If you
    do not use WINS on your network, DC and client should be on same network
    segment, because name query will be resolved with broadcast.

    HTH

    Toni
     
    T. Uranjek, Oct 17, 2006
    #2
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  3. Bob

    Bob Guest

    Toni,
    Thank you for the reply. I tried to ping the DC and get the message unknown
    host. Verified that the domain is correct, can ping from other work
    stations. The computer use to connect to the server until I disconnected it
    to test another computer. After reconnecting the network line it would not
    work. I have unplugged and reconnected the network cable form the wall and
    network card, disabled the network card built in to the mother board and
    added another network card, tried connecting at another station, and
    disconnected from the domain (renamed the computer, created a work group,
    tried to connect back to the domain).
     
    Bob, Oct 17, 2006
    #3
  4. Bob

    T. Uranjek Guest

    Hi!

    Can you ping DC's IP number? First, we should find out if this is
    connectivity or name resolution problem. Can you ping any other host or
    default gateway?

    Toni
     
    T. Uranjek, Oct 17, 2006
    #4
  5. Bob

    Bob Guest

    Toni,
    can not ping dc's ip number. can not ping any other host or default
    gateway. get the message destination host unreachable.
     
    Bob, Oct 17, 2006
    #5
  6. Bob

    T. Uranjek Guest

    Hi!

    Is your client DHCP client or did you set static IP yourself? Check your
    Local Area Conection settings, TCP/IP properties, do you have correct IP
    number, subnet mask, default gateway and DNS server IP number?

    Toni
     
    T. Uranjek, Oct 17, 2006
    #6
  7. Bob

    Bob Guest

    client is DHCP.
     
    Bob, Oct 17, 2006
    #7
  8. Bob

    T. Uranjek Guest

    Hi!

    Can you check IP configuration in command prompt with "ipconfig /all" and
    tell me client's IP, SM, DG and DNS server?

    Toni
     
    T. Uranjek, Oct 18, 2006
    #8
  9. Bob

    Bob Guest

    IP 169.254.134.61
    SM 255.255.0.0
    DG nothing
    DNS nothing
     
    Bob, Oct 18, 2006
    #9
  10. Bob

    T. Uranjek Guest

    Hi!

    You have APIPA (Automatic Private IP addressing) adress. First we need to
    get IP from DHCP server (if you are using one) or set static IP adress if
    you want to join your client to domain?

    You can request new IP address from DHCP server with "ipconfig /renew"
    command.

    Toni
     
    T. Uranjek, Oct 18, 2006
    #10
  11. Bob

    Bob Guest

    After running ipconfig /renew I receive the message: "The following error
    occurred when renewing adapter Local Area Connection DHCP Server
    unreachable."
     
    Bob, Oct 18, 2006
    #11
  12. Bob

    T. Uranjek Guest

    Hi!

    Do you have DHCP server on the network at all? Please check IP settings on
    one of the working client computer with "ipconfig /all" and post info here.

    Toni
     
    T. Uranjek, Oct 18, 2006
    #12
  13. Bob

    Bob Guest

    Microsoft Windows XP [Version 5.1.2600]
    (C) Copyright 1985-2001 Microsoft Corp.

    P:\>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : COMPUTER NAME
    Primary Dns Suffix . . . . . . . : COMPANYNAME.COM
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : COMPANYNAME.COM
    companyname.com

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : hoelscherengr.com
    Description . . . . . . . . . . . : Broadcom 570x Gigabit Integrated
    Con
    troller
    Physical Address. . . . . . . . . : 00-11-43-66-C8-E8
    Dhcp Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IP Address. . . . . . . . . . . . : 10.0.0.195
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 10.0.0.1
    DHCP Server . . . . . . . . . . . : 10.0.0.2
    DNS Servers . . . . . . . . . . . : 10.0.0.2
    Primary WINS Server . . . . . . . : 10.0.0.2
    Lease Obtained. . . . . . . . . . : Tuesday, October 17, 2006
    5:06:47 PM

    Lease Expires . . . . . . . . . . : Friday, October 20, 2006 5:06:47
    PM

    P:\>
     
    Bob, Oct 18, 2006
    #13
  14. Bob

    T. Uranjek Guest

    Hi, again!

    Is it possible to check if your DHCP server has exhausted its pool of IP
    addresses? Can you acess DHCP server to tell me what is the IP range defined
    for your subnet? I could tell you have to set static IP for your client and
    test connectivity, but we might produce IP conflict.

    Toni
     
    T. Uranjek, Oct 18, 2006
    #14
  15. Bob

    Bob Guest

    Setup computer with static IP for the client and it worked. Not sure why
    static would work when dynamic would not. DHCP IP pool is not exhausted, we
    have used approx. 40 out 100 addresses.
     
    Bob, Oct 18, 2006
    #15
  16. Bob

    T. Uranjek Guest

    Hi!

    DHCP server keeps audit log in %systemroot%\system32\dhcp folder. Write down
    your client's MAC address an you can check if DHCP request from that MAC is
    in your log. If not, then your client's DHCP request never made it to DHCP
    server or you can find out why IP number was not assigned to client.

    Toni
     
    T. Uranjek, Oct 18, 2006
    #16
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