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Emails deliverability - Reverse DNS does not work with private IP addresses

Discussion in 'E-mail Discussion' started by psytanium, Feb 21, 2019.

  1. psytanium

    psytanium Well-Known Member

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    Hello,

    Today I upgraded to the latest cpanel version, interesting feature to improve email reputation.

    The new feature found a misconfiguration problem, error:

    --------

    The system sends this domain’s outgoing mail from a private IP address, “10.217.192.9”. Reverse DNS does not work with private IP addresses because DNS does not store PTR records for them.

    The server may be misconfigured. Ensure that this server’s IP configuration, including the NAT configuration, is correct.

    --------

    I tried to work around the Edit DNS Zone but I think i need some hints and knowledge to fix it.

    Thanks
     
  2. Laurel A

    Laurel A Member

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    Yeah, I was just going to ask about how to set up the PTR record too. The cPanel suggestion to fix it says I need to update a record on a propagation.net server... which is GoDaddy and we don't have any services with GoDaddy! I think maybe I need to contact the company that hosts the server, but I don't really even know what to tell them.
     
  3. cPanelLauren

    cPanelLauren Forums Analyst II Staff Member

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    Hi @psytanium

    I unfortunately don't have a NAT routed server that would be suitable to test this on to replicate, could you please open a ticket using the link in my signature so that we can look into this issue further? Once opened please update this thread with the ticket ID so that we can update this thread with the outcome.

    In most cases and I think GoDaddy's case you need to contact them directly to manage this. IF you are able to manage your own rDNS you can use this step by step guide we have available: How to Configure Reverse DNS for BIND in WHM - cPanel Knowledge Base - cPanel Documentation

    Thanks!
     
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  4. psytanium

    psytanium Well-Known Member

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  5. psytanium

    psytanium Well-Known Member

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    Just to update the result.

    --
    Private IPs should be ignored in regards to PTR records as they do not support this functionality. We are currently opening an internal improvement case to update the verbiage on the page to be more clear as to what needs to be done. As of now you can simply ignore the mention of the private IP.
    --

    Thank you for the support
     
  6. Orlando Fernando Marconi

    Orlando Fernando Marconi Member

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    I have access to WHM, use Godaddy's VPS and Cloudflare for DNS.

    Could someone tell me where to start? Should the PTR in my case only be configured in Cloudflare?


    upload_2019-3-1_16-3-19.png
     
  7. Rafael Alvarez

    Rafael Alvarez Member

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    Did you managed to solve it? I also have CrapDaddy, but its a VPS and their support team usually is not very useful.
     
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