> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> On Behalf Of Rick Warner
> Sent: Friday, September 12, 2003 10:07 AM
> To: [EMAIL PROTECTED]
> Subject: RE: URGENT: postfix fails, no internet connection
>
>
> On Thu, 2003-09-11 at 17:53, Marc Adler wrote:
> >
> >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
> > > On Behalf Of Rick Warner
> > > Sent: Friday, September 12, 2003 9:30 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: RE: URGENT: postfix fails, no internet connection
> > >
> > >
> > > Well, re-install is a bit drastic. You say you cannot get on the
> > > 'Internet'. Is that what you mean, or do you mean that you have no
> > > network connectivity? The most likely place to look is in your
> > > network connectivity, i.e., bits flowing out of your box through
> > > your network adapter. Everything you have post so far, which is not
> > > much, is consistent with the network adapter either being dead, or
> > > not being configured and up under Linux. What is the output of
> > > ifconfig -a? Are there any boot messages about eth0? Is the driver
> > > for you network interface card loaded? Can you ping the W2K box?
> > >
> > > You had hints there that this was/is a network connection issue.
> > > Follow up on those. If you need more leads, please post more info.
> > > You do not give us much to go on.
> > >
> > > - rick
> >
> > I really have to apologize for the dearth of information, but
> once I added
> > the '127.0.0.1 localhost' line to /etc/hosts and postfix
> started working,
> > there have been no error messages to tell me what's going wrong. The
> > computer just won't access the internet, period.
> >
> > That is, I have a feeling the network itself is ok, because I
> can ping both
> > boxes from each other (RH9 <=> W2K) with no packet loss.
> >
> > ifconfig -a produces the following:
> >
> > eth0
> > Link encap: Ethernet HWaddr 00:07:E9:D8:4A:49
> > inet addr: 192.168.1.100 Bcast:192.168.1.255 Mask: 255.255.255.0
> > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> > RX packets:150 errors:0 dropped:0 overruns:0 frame:0
> > TX packets:1484 errors:0 dropped:0 overruns:0 frame:0
> > collisions:0 txqueuelen:100
> > RX bytes: 14068 (13.7kb) TX bytes:124303 (121.3kb)
> > Interrupt:11 Base address:0xdc80 Memory:ff6ef000-ff6ef038
> >
> > lo
> > Link encap: Local Loopback
> > inet addr: 127.0.0.1 Mask: 255.0.0.0
> > UP LOOPBACK RUNNING MTU:16436 Metric:1
> > RX packets:3459 errors:0 dropped:0 overruns:0 frame:0
> > TX packets:3459 errors:0 dropped:0 overruns:0 frame:0
> > collisions:0 txqueuelen:100
> > RX bytes: 235652 (230.1kb) TX bytes:235652 (230.1kb)
> > Interrupt:11 Base address:0xdc80 Memory:ff6ef000-ff6ef038
> >
> > If you can think of anything else (conf files, logs, etc.) that would be
> > useful, let me know, and I will post them.
> >
>
> OK, so networking is OK. Your IP address is in private space, so I
> assume you have some sort of router/firewall/gateway to the internet.
> Is that correct? Try this:
>
> ping www.yahoo.com
No good.
>
> then
>
> ping 66.218.70.49
Bingo!
>
> Does either work? If the first fails but the latter works, then
> we need to suspect that your name services are failing. If both
> fail, then it is more likely that you have a routing problem.
>
> For name services:
>
> What is /etc/resolv.conf? /etc/host.conf? /etc/nssswitch.conf? Can
> you ping your nameservers?
Can't ping my nameservers... I'm pretty sure the contents of
/etc/resolv.conf have become obsolete, or something. A couple of weeks ago
the first of the three nameservers provided by hawaii.rr.com went down,
causing minute-long delays before bringing up webpages. Now I guess the
other two have gone down, too. Why is it that my Linux box isn't fetching
the new correct nameserver addresses, while my W2K box is?
>
> For routing, what is the output of netstat -nr? Can you ping the
> defaultrouter? What happens when you do /usr/sbin/traceroute
> 66.218.70.49? (assuming you have traceroute installed).
>
> - rick
>
>
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