On Mon, Nov 08, 2010 at 07:21:42PM +0100, Ralf Hildebrandt wrote:
> * Luiz Antonio Emerenciano Alcoforado <l...@rapport.com.br>:
> > I need to set up a group of four Postfix servers, all four in the
> > same local network but each one connected to a different internet
> > link, so that when one internet link fails, that Postfix server
> > connected to the failing internet link forwards its pending emails to
> > another Postfix server, one with a good internet access.
>
> Use smtp_fallback_relay for that.
>
> machine1
> smtp_fallback_relay = [machine2]
>
> machine2
> smtp_fallback_relay = [machine3]
>
> machine3
> smtp_fallback_relay = [machine4]
>
> machine4
> smtp_fallback_relay = [machine1]
The fallback relays MUST be loop-free. Thus machine4 must NOT forward
back to machine1.
--
Viktor.
