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Reverse dns donst Work

Discussion in 'Bind / DNS / Nameserver Issues' started by cPanelJared, May 13, 2010.

  1. cPanelJared

    cPanelJared Technical Analyst
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    Does your server have PTR authority?

    Many Internet service providers and data centers do not delegate reverse DNS authority to their customers. Are you sure that this authority is delegated to your server? You will need to ask your service provider to make sure. If authority is not delegated to your server, you will need to ask the service provider to make the changes in their nameservers for you.
     
  2. Kleinkauf

    Kleinkauf Registered

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    Hi for all, i have a problem with server: 189.1.164.169 the reverse dns dont work, i run host 189.1.164.169 in the server and: 169.164.1.189.in-addr.arpa domain name pointer slayer.trhost.com.br.

    but external dont work

    The port 53 on the firewall as unblock


    Appreciate for help, tks.
     

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  3. Kleinkauf

    Kleinkauf Registered

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    I open a suporte ticket now, but...

    My configuration on the are correctly?


    Thank you for your attention.
     
  4. cPanelJared

    cPanelJared Technical Analyst
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    The zone in the screenshot that you attached to this ticket looks good, but if it is not working, it is very possible that the service provider has not delegated reverse DNS authority to your server. Have you asked your service provider if they have delegated reverse DNS authority to your server?
     
  5. Spiral

    Spiral BANNED

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    Reverse IP address lookups are only handled at the IP owner level which in this case would be your hosting provider and would be setup in their own DNS system and **NOT** the DNS that is on your server machine.

    Sole exception -- your hosting provider could at their discretion sub-delegate reverse DNS authority for your assigned IP addresses to your server which basically in a nutshell sets up their own DNS to keep updated using the zone files you setup in your own server.

    Most data centers don't bother with the hassle and management of keeping up with sub-delegation and just setup whatever reverse DNS address that you wish in their own DNS systems on request.

    Some data centers even have it as an option on their customer account screens where you can type in the reverse DNS addresses yourself and have that information automatically updated in the data center records.

    Others that don't have this interface would just simply being a matter of asking the data center to update the IP reverse DNS with whatever hostname you tell them to associate with the IP address.

    I have never seen any data center charge anything for this service so it is just simply a matter of asking them and that is pretty much it.
     
  6. hostingtech

    hostingtech Member

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    The authoritative Nameservers for this IP are :

    --
    164.1.189.in-addr.arpa. 86400 IN NS ns1.hostlocation.com.br.
    164.1.189.in-addr.arpa. 86400 IN NS ns2.hostlocation.com.br.
    --

    As long as you don't own these NS / IPs and they are not assigned on your server you need to contact your provider as suggested by others. The above mentioned NS need to have Reverse DNS entry for the IP you have given in your post.
     
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