Re: [exim] smtp transport and interface=

On Sat, May 15, 2021 at 11:11:40AM +0100, Jeremy Harris via Exim-users wrote:
> On 15/05/2021 06:55, Jim Pazarena via Exim-users wrote:
> > a server with three IP numbers of the same subnet
>
> Generally a bad move. Unless the networks are physically
> separated, IP routing just gets confused.

No, ip routing is fine with multiple ip addresses on the same network.
However, advanced sysadmin skills are required to configure it properly.

Multiple ip addresses may be used to select different outgoing channels
if host is placed behind a device doing src-based policy routing.

In recent Linux kernels not multiple IPs, but even multiple MACs on
the same interface are possible.
--
Eugene Berdnikov