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Thread: What's reverse DNS ?

  1. #1
    Hosting Guru basem is on a distinguished road
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    What's reverse DNS ?

    "reverse DNS"
    i have heared that term a lot
    what's it and is it good or bad ?

  2. #2
    Hosting Master etech-peter is on a distinguished road
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    Reverse DNS is a method of resolving an IP address into a domain name just as DNS which resolves domain names into associated IP addresses. One of the applications of reverse DNS is spam filter. Although reverse DNS is fairly effective for blocking spam it sometimes also blocks valid emails.
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    HWHT Starter SparkSupport is on a distinguished road
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    Quote Originally Posted by basem View Post
    "reverse DNS"
    i have heared that term a lot
    what's it and is it good or bad ?
    Most of the mailservers nowadays check reverse dns for authenticity of mails.
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  4. #4
    HWHT Addict WooServers is on a distinguished road
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    Reverse DNS is a means of checking that a computer claiming to be a specific server isn't actually faking it. When people send out spam, viruses, and so on, they don't tend to use their real names and e-mails. To cut down on the amount of spam that comes in, many mail servers use reverse DNS to confirm that the server trying to deliver mail to them is genuine.

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