On Sun, 20 Nov 2005, Micah R Ledbetter wrote: > I have a server out on the net, and it's been up for a week or two. > I've been on and off it all week long, but as of last night, DNS > didn't seem to work for it. Network connectivity worked, because not > only could I ssh *in*, but I could also contact the outside network > as long as I used something in the hosts file or an IP address. > Adding more (known good) DNS servers to /etc/resolv.conf doesn't seem > to help. DNS was working recently, and I haven't changed anything > since then. A reboot didn't help (I would have just stopped && > started networking... but, well, all I have is ssh, so...). > > One very weird thing is that it can apparently send mail to outside > network addresses. It could send to my gmail account fine last night, > though it seemed to take a while (20 minutes or so, when normally > it's instantaneous). I don't have gmail or google in my /etc/hosts. > > I've seen elsewhere to look at the output of iptables, but it has > never been installed. > The contents of /etc/nsswitch.conf are at http://vlack.com/vlack/lol/ > nsswitch.conf. I'm getting nowhere, and I have no idea why.
What is /etc/resolv.conf? Are you running a local name server or uses someone else's? If you are using someone else's can you ping them? If you can ping them, install bind-tools and see if you can run direct queries against them with dig or host, something like: dig @xxx.xxx.xxx.xxx -t mx gentoo.org where xxx.xxx.xxx.xxx is the IP of the DNS server you are checking. Lots of troubleshooting options here. -- -- gentoo-user@gentoo.org mailing list
