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Thread: can ping LAN IP, not domain name or WAN IP

  1. #1
    NoDoze is offline Elite Member
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    Default can ping LAN IP, not domain name or WAN IP

    I can ping the LAN IP, dig, and nslookup mail.domain.com

    But when I ONLY ping the domain mail.domain.com it says host unreachable...?

    firewalls, iptables all off on host, server and router....makes no difference.

    I'm guessing its a DNS issue, but where to look?

    Any ideas?

    Thanks!

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by NoDoze View Post
    I'm guessing its a DNS issue, but where to look?

    Any ideas?
    You could start with all the obvious questions. Is the Zimbra server actually up? Is your DNS server actually up and reachable? What does the following show:

    Code:
    su - zimbra 
    zmcontrol status
    Post the output of the following commands (run on the ZImbra server):

    Code:
    cat /etc/hosts
    cat /etc/resolv.conf
    dig yourdomain.com any
    dig yourdomain.com mx
    host `hostname`  <-- us ethat exact command with backticks not single quotes
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    veronica is offline Outstanding Member
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    What do you mean by ping domain mail.domain.com ? is it the hostname of the machine ? Whatoes it point to in DNS ?

  4. #4
    NoDoze is offline Elite Member
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    yes, zimbra server is running

    hostname is mail.domain.com

    resolv.conf gives:
    nameserver 192.168.1.248
    nameserver 192.168.1.190
    domain localdomain
    search domain.com
    digs via the mail server all pull up 192.168.1.248 as the DNS which is the mail server's IP

    I'm able to access mail.domain.com via the browser and email is all functioning ok.

    Via the ip 192.168.1.248 ping gives a return.
    ONLY ping and samba say mail.domain.com is unreachable...?

    What could cause this?

    Thanks.

  5. #5
    y@w's Avatar
    y@w
    y@w is offline Moderator
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    If it comes back correctly from a dig but can't be pinged, it sounds like an issue with the hosts file.

  6. #6
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by NoDoze View Post
    What could cause this?
    Please post the output of the commands that I've asked you to run.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  7. #7
    NoDoze is offline Elite Member
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    figured it out!!!

    our DNS server here is 192.168.1.190
    and the email server, having it's own DNS server, is 192.168.1.248

    When I switch my DNS from 192.168.1.190 to 192.168.1.248 it worked!
    I was able to ping mail.domain.com!

    So now my question is, 192.168.1.190 is our main DNS server, why are the two DNS servers not able to talk to each other? How would I set that up?

    Thanks.

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