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  1. #1

    reverse dns question

    Hi,

    How can you tell if you have reverse dns enabled on a server running linux 7.3? If it isn't enabled. How does one go about enabling it?

    One more questions. If reverse dns is enabled, will it do reverse lookups for all the nameservers on the server? Because some guy with south african domains wants hosting on my server, but they require reverse dns.

    Thanks.

  2. #2
    Join Date
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    you have to make a reverse dns zone file (in-addr.arpa)
    Nick Twaddell
    WebSpace Solutions - Custom E-Solutions
    Fast, Reliable, Affordable Web Hosting

  3. #3
    It will work for the nameservers on the server I believe

  4. #4
    umm. sorry. im a dunce i guess. ntwaddel could you expand on that? What needs to be in the file, and where to put it?

  5. #5
    Join Date
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    this is a quick howto on foward and reverse dns

    http://www.freebsd.org/doc/en_US.ISO...dbook/dns.html
    Nick Twaddell
    WebSpace Solutions - Custom E-Solutions
    Fast, Reliable, Affordable Web Hosting

  6. #6
    Join Date
    Jun 2001
    Location
    Indiana
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    Check out http://www.dnsreport.com/

    They will let you know whether you have RDNS setup or not and some more info that might be good and some other that is crappy

    Another site they have is www.dnsstuff.com
    Gagsplus - http://www.gagsplus.com
    Best of Humor www.bestofhumor.com

  7. #7
    Join Date
    Jul 2001
    Location
    Indianapolis, IN
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    I HIGHLY suggest O'Reillys DNS & Bind Book. It's about $30 but you'll become a DNS master. Do a google search for reverse dns and you'll come up with alot of stuff.

    If you still need help e-mail me.
    neil MCITP, VCP

  8. #8
    Join Date
    Jul 2002
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    San Luis Obispo, CA
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    yeah the O'Reilly book is very good
    Nick Twaddell
    WebSpace Solutions - Custom E-Solutions
    Fast, Reliable, Affordable Web Hosting

  9. #9
    Join Date
    Dec 2001
    Posts
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    Reverse DNS isn't something you "enable" on a server. Reverse DNS works just like "regular" DNS but using the in-addr.arpa domain and PTR records. If you don't have any clue what I'm talking about, then chances are that your provider hasn't delegated reverse DNS authority to your server anyway, so there's nothing you can do on your server to "enable" it. You will have to contact your provider regarding reverse DNS, and tell them what host name you want each IP address to resolve to.
    ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ

  10. #10
    You should goto arin.net and do a whois on your IP address, more than likely you are not authoritative to do reverse DNS and your upstream provider will have to do it for you or delegate it down to you.
    Jay Kramer - Operations Manager
    Affordable Colocation and Dedicated Servers
    www.colostore.com 1-877-719-3698

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