Networking Troubles

[William O'Higgins Witteman]

On Thu, Sep 13, 2007 at 10:33:34PM -0400, Kareem Shehata wrote:
>
>> I have set up my first new computer in many years, and happily installed
>> Debian on it, but I am having a couple of niggling wee problems with
>> it, and could use a pointer or two.
>> 
>> The first problem is a lag in outbound networking - only on DNS queries
>> - pinging an IP gets instant responses, but any DNS resolved ping seems
>> to be waiting for a timeout.  I thought I fixed this once before, but it
>> has been years since I installed fresh, so I forgot this fix.
>> 
>> The second problem is that I cannot seem to reach my SMTP smarthost
>> (teksavvy) with Postfix.  The configurations are the same between this
>> box (working) and the new box (not working).
>> 
>> Here's a snippet from /var/log/mail.log:
>> 
>> Sep 13 15:12:20 yam postfix/smtp[7338]: 7DA639F4B0:
>> to=<address-hcDgGtZH8xNBDgjK7y7TUQ at public.gmane.org>, relay=none, delay=20, delays=0.05/0.02/20/0,
>> dsn=4.4.3, status=deferred (Host or domain name not found. Name service
>> error for name=smtp.teksavvy.com type=MX: Host not found, try again)
>> 
>> I can ping the address, so something else is awry.  Any help would be
>> appreciated, thanks.
>
>Sounds like a resolv.conf type problem, that's the first place I would
>check.  Can you post the contents of that file?  Also, is your network
>interface automatically configured (DHCP) or done manually?

resolv.conf:
nameserver 192.168.1.1
search gotdns.org

network/interfaces:
allow-hotplug eth1 
iface eth1 inet static 
  address 192.168.1.251 
  netmask 255.255.255.0 
  network 192.168.1.0 
  broadcast 192.168.1.255 
  gateway 192.168.1.1 
  # dns-* options are implemented by the resolvconf package, if installed 
  dns-nameservers 192.168.1.1 
  dns-search gotdns.org

>Lastly, with your postfix error, do you have any entries in the hosts file?
>I don't know much about postfix, but I've seen some mailers that won't use
>the hosts entries and run exclusively off DNS.

hosts:
127.0.0.1 localhost
192.168.1.251 yam.gotdns.org yam

Does any of that help?
-- 

yours,

William

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