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How do I solve "server not found" problems?

9030 Views 19 Replies Latest reply: May 23, 2012 4:17 PM by BDAqua RSS
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benrst Level 1 Level 1 (0 points)
Currently Being Moderated
May 5, 2012 10:59 AM

I have an iMac G5 desktop. I was using a primitive dial up internet connection. It was working for a long time, maybe a year or more, but one day it stopped working. The problem does not appear to be with the internet provider. The number dials and connects but the computer won't do anything more, i.e. it won't connect to any internet pages. The only error message is "server not found" or similar, but I do notice that the computer is trying to connect initially to Yahoo. I am not the original owner of the computer and I assume that Yahoo is the default set up. I don't know if the fact that it is trying to connect to Yahoo matters. I would like to mention that I have gotten "server not found" error messages before on a PC with DSL internet connection. Whenever that happened, I was told to disconnect and reconnect the DSL modem and/or router. This has always solved the problem, but there is nothing to dis/reconnect on my Apple. Thanks.

iMac, Mac OS X (10.5.3)
  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 5, 2012 11:30 AM (in response to benrst)

    Hello,

     

    Open System Preferences>Network>Configure>Proxies Tab, make sure none are set, like for HTTP & HTTPS to use at Home, if you use it at 2 locations, just make a New Location for home.

     

     

    10.5/10.6 instructions, System Preferences>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

     

     

    Make a New Location, Using network locations in Mac OS X ...

     

    http://docs.info.apple.com/article.html?artnum=106653

     

     

    The Interface that connects to the Internet, needs to be drug to the top of System Preferences>Network>Show:>Network Port Configurations and checked ON.

     

    10.5.x/10.6.x/10.7.x instructions...

     

    System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

     

    The interface that connects to the Internet should be dragged to the top of the list.

     

    Click on the DNS tab and enter these numbers...

     

    208.67.222.222

    208.67.220.220

     

    DNS Servers are a bit like Phone books where you look up a name and it gives you the phone number, in our case, you put in apple.com and it comes back with 17.149.160.49 behind the scenes.  

     

    These Servers have been patched to guard against DNS poisoning, and are faster/more reliable than most ISP's DNS Servers.

  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 6, 2012 2:12 PM (in response to benrst)

    Under Configure Proxies, it says "Using a PAC file". Underneath that it says PAC file URL and it has a box where something could be filled in but there is nothing in the box and I wouldn't know what to write there.

    OK, that's standard & Proxies aren't the problem then.

     

    There is also a section "Search Domains". Should I add something there?

    Normally not needed, but opendns.com if you like.

     

    Does it matter what "Location" says under Network? It has filled in something there. I didn't specify it myself.

    Might be a clue...

     

    Make a New Location, Using network locations in Mac OS X ...

     

    http://support.apple.com/kb/HT2712

     

    Add those DNS numbers there if need be.

     

    If you put these numbers in Safari's URL bar & hit enter, do you get Apple?

     

    17.149.160.49

  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 8, 2012 1:17 PM (in response to benrst)

    Can you try those numbers in a different browser?

     

    Open Network Utility>Ping tab, try to ping...

     

    96.16.53.15

     

    Does that get a response?

  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 9, 2012 1:36 PM (in response to benrst)

    Whew, does the computer show a good IP in Network prefs for the interface we're using, like not starting with 169.254 ?

  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 10, 2012 10:33 AM (in response to benrst)

    In Network Utility can you, Ping, Traceroute, & Lookup...

     

    216.194.28.33

     

    If you think it's Malware...

     

    ClamXAV, free Virus scanner...

     

    http://www.clamxav.com/

     

    Free Sophos...

     

    http://www.sophos.com/products/enterprise/endpoint/security-and-control/mac/

  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 11, 2012 10:53 AM (in response to benrst)

    Here's he last part of my Traceroute to that IP...

     

    8  ae-32-52.ebr2.Seattle1.Level3.net (4.69.147.182)  59.973 ms  64.427 ms  79.769 ms

    9  ae-2-2.ebr2.Denver1.Level3.net (4.69.132.54)  85.155 ms  109.182 ms  90.040 ms

    10  ae-3-3.ebr1.Chicago2.Level3.net (4.69.132.62)  119.993 ms  118.727 ms  119.946 ms

    11  ae-1-100.ebr2.Chicago2.Level3.net (4.69.132.114)  125.083 ms  114.022 ms  124.961 ms

    12  ae-6-6.ebr2.Washington12.Level3.net (4.69.148.145)  130.918 ms  124.080 ms  130.057 ms

    13  4.69.148.49 (4.69.148.49)  125.206 ms  144.271 ms  144.847 ms

    14  ae-71-71.csw2.NewYork1.Level3.net (4.69.134.70)  129.542 ms ae-61-61.csw1.NewYork1.Level3.net (4.69.134.66)  143.935 ms ae-81-81.csw3.NewYork1.Level3.net (4.69.134.74)  149.275 ms

    15  ae-41-90.car1.NewYork1.Level3.net (4.69.155.195)  134.149 ms ae-31-80.car1.NewYork1.Level3.net (4.69.155.131)  139.261 ms ae-21-70.car1.NewYork1.Level3.net (4.69.155.67)  139.303 ms

    16  METROPOLITA.car1.NewYork1.Level3.net (4.26.32.178)  154.088 ms  134.123 ms  154.802 ms

    17  216-194-46-86.ny.ny.metconnect.net (216.194.46.86)  149.784 ms  148.830 ms  129.679 ms

    18  ns1.metconnect.net (216.194.28.33)  120.172 ms  134.034 ms  125.373 ms

     

    All I can see on yours is that you did make it out to the Internet...

     

    245.31.194.216.in-addr.arpa. 86400 IN PTR 216-194-31-245.ny.ny.metconnect.net.

     

    Is your Dial-up account still active with these people?

  • BDAqua Level 10 Level 10 (114,805 points)
    Currently Being Moderated
    May 11, 2012 2:41 PM (in response to benrst)

    Hmmmm, in System Preferences>Security>Firewall tab, is Allow all incoming connections checked?

     

    If no check it, if toggle it off & back on but leave that window open while we test again.

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