From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jarek Poplawski <jarkao2@o2.pl>
Date: Thu, 10 Aug 2006 13:14:54 +0000
Subject: [LARTC] Re: route mail through different gateway
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On 04-08-2006 04:36, Michael wrote:
> Hi All,
> 
> I've got server with one LAN card eth0 ip.0.0.5 <http://10.0.0.5>
> 
> default access t ointernety done through ADSL router gw 10.0.0.1 
> <http://10.0.0.1>
> we got second internet access through another ADSL router gw 10.0.0.2 
> <http://10.0.0.2>
> 
> I want to send all e-mail out through gw 10.0.0.2 <http://10.0.0.2>
> How it can be done?
> I've tried to mark packets:
> iptables -t mangle -A OUTPUT -p tcp --dport 25 -j MARK --set-mark 0x1
> and
> ip ru add fwmark 0x1 table mail.out
> ip ro add default via 10.0.0.2 <http://10.0.0.2> lookup mail.out

You mean:

ip ro add default via 10.0.0.2 table mail.out

Try this also:

echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter

Jarek P.

PS: I hope you have this mail.out properly added (or replace this 
with a number e.g.: 100) and fwmark enabled in kernel config.

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