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    DNS Problems Behind a linksys


    I have redhad 7.2 running with a webserver off of a linksys router. up until yesterday everything worked perfectly. But first let me say I was using a different ISP up until last week and now I had switched.

    I never made the dns changes under the network tab in redhat when I changed that is why I think it worked for a while longer. If I put the new dns entries it still does make a difference.


    Anyway, I cannot resolve any addresses on the webserver. The most important thing is I cannot sendmail anymore outside my own network.

    I am now getting this when I send a message


    --------------------------------------------

    The original message was received at Thu, 17 Jan 2002 06:26:54 -0500
    from [192.168.1.1]

    ----- The following addresses had transient non-fatal errors -----
    <mmmmm@hotmail.com>

    ----- Transcript of session follows -----
    451 hotmail.com: Name server timeout
    Warning: message still undelivered after 4 hours
    Will keep trying until message is 5 days old


    ---------------------------------------------

    the only way I gan send mail between my internal boxes is if I add the IP

    192.168.1.101 xxxxxxx xxx.xxxxxxxxx.com

    in my host file

    --------------------------------------------

    What did I do wrong? What do I need to do?


    thanks jobesd
    I only do what the voices in my head keep telling me to do.
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    Let me ask you one simple question. Can you reach any site via IP?

    >> What did I do wrong?

    Maybe or maybe not. Keep in mind that some ISPs (maybe 20%) setup ACL to their caching nameserver so only particular net block can query the namserver for DNS resolution. You also need to know what is the difference between caching nameserver and authoritative nameserver.

    >> What do I need to do?

    Give us the IP of your nameserver so we can test it for you.
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    Today for some "unknown reason" I started getting reverse lookups on some IP's.

    I can get to the internet from the server box


    Yesterday I could not get to any IP only URL's



    DNS

    Primary 207.69.188.185
    Secondary 207.69.188.186



    I still show up as 192.168.1.1 in my logs. Before I showed up with a name resolution spider.xxx.xxx


    thanks jobesd
    I only do what the voices in my head keep telling me to do.
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    I am using linksys router for a year and pointed to server ok. I am changing free sco.

    do u know how to SPell redhat?
    Last edited by pentium5; January 24th, 2002 at 09:52 PM.
    regards,

    wish to use AT 89c51 single chip computer to do remote sensing and send the data back from woods to office via nokie 3330 and internet. HOW?
    first I must revise C program thro' example, what's next?

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