Internet domains are unreachable occasionally.

Discussion in 'Mac OS X Server, Xserve, and Networking' started by PinkyMacGodess, Jul 23, 2017.

  1. PinkyMacGodess macrumors 68040

    PinkyMacGodess

    Joined:
    Mar 7, 2007
    Location:
    Midwest America.
    #1
    Every now and then, some domains are unreachable on our internet connection.

    Like today, it's Amazon.com, and dailymail.co.uk. They just report back as 'Server not found'.

    Sometimes it's popular sites like Amazon today. And apparently it's only on this computer! WTF!!!
     
  2. kiwipeso1 Suspended

    kiwipeso1

    Joined:
    Sep 17, 2001
    Location:
    Wellington, New Zealand
    #2
    Check your DNS server preferences and make sure it is updating from your router.
     
  3. PinkyMacGodess thread starter macrumors 68040

    PinkyMacGodess

    Joined:
    Mar 7, 2007
    Location:
    Midwest America.
    #3
    That is the weird assed part of this: both systems use the SAME DNS SERVER!

    I'm beginning to doubt my sanity (more than I usually do) and think something strange is afoot. Hackers? Ah, stopping me from spending my money on Amazon! HAH!!!

    But seriously, I can try a blocked IP, and then all of a sudden it starts working again. Like Amazon.com is working perfectly fine now. Damned odd...
     
  4. belvdr macrumors 603

    Joined:
    Aug 15, 2005
  5. PinkyMacGodess thread starter macrumors 68040

    PinkyMacGodess

    Joined:
    Mar 7, 2007
    Location:
    Midwest America.
    #5
    Everything is DHCP, and, as far as I know, there is only one DHCP server. Making this stranger still... SO far, nothing today, but it could happen at any point.

    Plus, and DHCP server is supposed to check and make sure that the address isn't currently being used before issuing it. But I remember a flaw in Novell's DHCP implementation that would reissue addresses that itself had issued. It was fixed on an update.
     
  6. kiwipeso1 Suspended

    kiwipeso1

    Joined:
    Sep 17, 2001
    Location:
    Wellington, New Zealand
    #6
    If you are running a webserver with a domain name, you may have a dns server on your mac os server.
    All you need do is change the dns server preferences to only look up for inside the network, so that the incoming domain name requests contact your webserver.

    Try that, and see if it works better.
     
  7. PinkyMacGodess thread starter macrumors 68040

    PinkyMacGodess

    Joined:
    Mar 7, 2007
    Location:
    Midwest America.
    #7
    That's the way it's setup. Hmm...
     
  8. kiwipeso1 Suspended

    kiwipeso1

    Joined:
    Sep 17, 2001
    Location:
    Wellington, New Zealand
    #8
    I used to have similar problems, but am unsure if this is due to the ISP DNS.
    I would suggest that you use the google DNS on your router to fix it.
     
  9. PinkyMacGodess thread starter macrumors 68040

    PinkyMacGodess

    Joined:
    Mar 7, 2007
    Location:
    Midwest America.
    #9
    And I tried that too, and was still getting the same issue. I thought it was being caused because I was using the Google DNS. It's not constant, but it's a pain when it does happen.
     

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