SBS 2003 SP2 missing dns entries

Posted on 2009-12-22
Last Modified: 2012-05-08
We have an SBS 2003 SP2 server that is missing DNS entries (A records) for pc's. We recently used the wizard to change IP of the server from 192.168.x.x to 10.x.x.x. The server ip changed along with DHCP to reflect the new ip structure but DNS entries are missing for computers. The server record is in there however. You can ping computers and they respond but no A records.
When you RDP to a pc you can get to it by IP but not by name.
Question by:mercado1459
    LVL 77

    Accepted Solution

    Is the SBS your DHCP server? If not you may find they will not get automatically added to DNS. Also you may have this problem if they are assigned IP's statically. If so check the box "register this connection in DNS" under the advanced DNS properties of the NIC.

    Also in the DHCP management console right click on the DHCP server name |choose properties,  | DNS | check Enable DNS dynamic updates, Dynamically update DNS A and PTR records, and Discard A and PTR records when lease deleted.

    Author Comment

    Hi RobWill,

    Yes, SBS is the DHCP server. DHCP is dynamically assigned by the pool.

    I did the following since there was no setting:
    check Enable DNS dynamic updates, Dynamically update DNS A and PTR records, and Discard A and PTR records when lease deleted.

    How long before we see changes?

    When is the Always dynamically update used versus using Dynamically update?
    LVL 77

    Expert Comment

    by:Rob Williams
    >>"How long before we see changes?"
    The DHCP leases already in place will not update, but new DHCP leases should. If you delete the existing lease in the DHCP console and run on a client machine ipconfig /release  &  ipconfig /renew  it should update DNS.

    >>"When is the Always dynamically update used versus using Dynamically update?"
    You can enable this without a problem but should only be necessary with clients running old operating systems like NT & Win9x. I believe Win2K is OK.


    Author Comment

    We will not be back for a few weeks so I will give you the points now because the DHCP leases is for 8 days and there is no one there to check right now. Thanks for your help.
    LVL 77

    Expert Comment

    by:Rob Williams
    Thanks mercado1459. Should work fine.
    Happy Holidays!

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