I've got two ethernet interfaces eth0 and 1. I'm using eth1 for pppoe connection with a modem, and eth0 for dsl connection to a router. I have setup a static routing to my isp's smtp server using eth0 in the config file /etc/sysconfig/network-scripts/route-eth0:

192.168.2.0/24 via 192.168.1.1 # test to see if this route populate into routing table n it does.
smtp.xtra.co.nz via 192.168.1.1 # does not populate into routing table at all

What happens is that the second route does not popylate into routing table but first one does. Do I have to specify the static route by ip instead of domain name for this to work? This is my current routing table:

Destination Gateway Genmask Flags Metric Ref Use Iface
lns2.sky.woosh. * 255.255.255.255 UH 0 0 0 ppp0
192.168.2.0 192.168.1.1 255.255.255.0 UG 0 0 0 eth0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default lns2.sky.woosh. 0.0.0.0 UG 0 0 0 ppp0

I know I can put this route into /etc/rc.local by doing:
route add -host smtp.xtra.co.nz gw 192.168.1.1 dev eth0

I just wanna know if the route-eth0 will support using domain names instead of IP's.

Thanks.

At the time that eth0 is being activated, do you have a route for dns queries to resolve the mail server?

If not, add xtra's url to your /etc/hosts and try again..

Also have a look at http://tldp.org/HOWTO/Adv-Routing-HOWTO for the split routing setup.. Chapters 4 & 5

It is not possible, because the package iproute2 used in network scripts, does not support routing by destination using hostnames.

In Centos 4.5
Ex:
#ip route add linux.com via 192.168.1.1
#Error: an inet prefix is expected rather than "linux.com".
ping linux.com
#PING linux.com (66.35.250.176) 56(84) bytes of data
#ip route add 66.35.250.176 via 192.168.1.1
ip route ls|grep 66.35
66.35.250.176 via 192.168.1.1 dev eth0

Hever Costa Rocha