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Correct way to setup reverseDNS entries for BIND?

Discussion in 'Bind / DNS / Nameserver Issues' started by tiff2342, Oct 4, 2012.

  1. tiff2342

    tiff2342 Well-Known Member

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    Code:
    FAIL: Found reverse DNS entries which don't resolves
    IP-IP-IP-IP.HOST.DOMAIN.TLD → ???
    All IP's reverse DNS entries should resolve back to IP address (MX record's name -> IP -> IP Reverse -> IP). Many mail servers are configured to reject e-mails from IPs with inconsistent reverse DNS configuration.
    I found this:
    Configuring Reverse DNS for BIND

    But I am a little confused. Am I creating a file called <MYIPBACKWARDS>.in-addr.arpa under /var/named/?

    Do I have to do this on all my nameservers?
     
  2. dalem

    dalem Well-Known Member
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    First you need to control your IP space either by a direct allocation from a RIR or you provider has given you access to your Ip allocation via your ASN or pointed them to your name servers.

    xx.xxx.xxx.in-addr.arpa zones have nothing to do with name servers the names servers that control the reverses zone must br pointed to your ip space . The xxx.xxx.xxx.in-addr.arpa zone is for setting up reverse PTR
    IE: 1.xx.xxx.xxx.in-addr.arpa PTR somehost.com


    If your asking these questions its likely that you do not control your ip space your provider does. you will need them to set up your reverse PTR's
     
  3. tiff2342

    tiff2342 Well-Known Member

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    If I'm running a VPS do I need to have them change them? I had them change them so the name to IP changed in the "tracert" as IP-IP-IP-IP.HOST.DOMAIN.TLD but when i use this Forward Confirmed Reverse DNS Testing Form it fails "ERROR - Reverse Lookup Failed" IP does not match the rDNS.
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    Yes, if you are a VPS customer, it's likely they will have to configure the RDNS record for you. Contact them to let them know your previous request has not been configured.

    Thank you.
     
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