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 then ping 66.218.70.49 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? 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 -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
