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Thread: Reverse DNS For E-mail And Dedicated IP's Question

  1. #1
    dkz
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    Default Reverse DNS For E-mail And Dedicated IP's Question

    Hello,

    I wanted to know if I assign a domain name a dedicated IP if that IP needs a reverse DNS listing as well so it will not be block from ISP's such as AOL or will the e-mail for that domain still be sent via the primary IP address which is what is listed for the mail server?

    Thank you for the help.

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    The PTR record should resolve to the server. If it doesn't, other providers may block your e-mail messages.

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    Quote Originally Posted by dkz
    Hello,

    I wanted to know if I assign a domain name a dedicated IP if that IP needs a reverse DNS listing as well so it will not be block from ISP's such as AOL or will the e-mail for that domain still be sent via the primary IP address which is what is listed for the mail server?

    Thank you for the help.
    The latter. All email is, by default, sent out on the main servers IP address and so you only really need an rDNS PTR record for the main IP.
    Jonathan Michaelson

    cPanel Server Configuration, Security and Antivirus/AntiSpam Services
    http://www.configserver.com

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    dkz
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    Thanks for verifying that!

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    Quote Originally Posted by chirpy
    The latter. All email is, by default, sent out on the main servers IP address and so you only really need an rDNS PTR record for the main IP.
    But that won't solve the problems dnsreport.com has in not finding a reverse PTR for IP address of the domain name.

    I have a PTR for the primary IP address of my server, which there is no problem with. But the virtual sites are on another IP address. When dnsreport.com looks up any of the virtual sites on that secondary IP address it reports the no reverse PTR error.

    It also creates the mail server hostname greeting problem as well. How does others get around this, all of the shared sites hosted on the same primary IP address?

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    Registered Member This forum account has been confirmed by cPanel staff to represent a vendor. chirpy's Avatar
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    That's a failing of dnsreport.com, not your server configuration.
    Jonathan Michaelson

    cPanel Server Configuration, Security and Antivirus/AntiSpam Services
    http://www.configserver.com

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