From: Adrian von Bidder (avbidderfortytwo.ch)
Date: Tue Jun 14 2005 - 03:31:52 CDT

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On Tuesday 14 June 2005 10.11, Frédéric Massot wrote:

> I seek a transport table which could resemble :
>
> eth1 smtp:smtp.wanadoo.fr
> eth2 smtp:smtp.free.fr

Not beautiful, but you could do
iptables -t nat -A OUTPUT -p tcp --dport smtp -o eth1 \
        -j DNAT --to-destination smtp.wanadoo.fr
iptables -t nat -A OUTPUT -p tcp --dport smtp -o eth2 \
        -j DNAT --to-destination smtp.free.fr

With all the fancy routing and netfilter features of the recent 2.6 kernels
(OWNER match etc.) you could probably narrow down the rules to only affect
postfix' connections.

I doubt there is a postfix-internal solution for this problem.

cheers
-- vbi

--
"Why can't we ever attempt to solve a problem in this country without having
a 'War' on it?" -- Rich Thomson, talk.politics.misc

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