Wietse Venema put forth on 10/28/2009 5:46 AM:
> You don't need multiple network cards. You simply need a box with
> multiple network addresses.
For example, on Debian 5.0 (likely similar on other *nix distros) you
could do something like this:
/etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 200.1.1.30
netmask 255.255.255.0
network 200.1.1.0
gateway 200.1.1.1
auto eth0:0
iface eth0:0 inet static
address 206.1.1.65
netmask 255.255.255.0
network 206.1.1.0
gateway 206.1.1.1
auto eth0:1
iface eth0:1 inet static
address 65.41.216.221
netmask 255.255.255.0
network 65.41.216.0
gateway 65.41.216.1
This will bind 3 IP addresses of 3 different class C networks to one
physical ethernet device (NIC). You may or may not need to play with
your local routing table to make sure that each Postfix instance sends
its traffic out the correct interface.
--
Stan
