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List:       postfix-users
Subject:    Re: postfix interface
From:       "=?ISO-8859-1?Q?Gabriel_Angel_M=F6ll_Ibacache?=" <gabriel.moll () gmail ! com>
Date:       2008-07-31 15:09:48
Message-ID: 484a411b0807310809v64a8404at210ecea2a0a3c352 () mail ! gmail ! com
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2008/7/31 Robert Schetterer <robert@schetterer.org>:
> Gabriel Angel Möll Ibacache schrieb:
>>
>> Hi everyone!
>>
>> I have a linux box with three interfaces and I want to set postfix
>> outgoing interface to eth2
>>
>> eth0 is conected to LAN
>> eth1 is using a public IP x.x.x.x
>> eth2 is usign a public IP y.y.y.y
>>
>> I 'm using linux box to NAT, and firewall with iptables.
>>
>> The routing tables are
>>
>> # route -n
>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use
>> Iface
>> wan   0.0.0.0         255.255.255.248 U     0      0        0 eth1
>> wan   0.0.0.0         255.255.255.248 U     0      0        0 eth2
>> lan    0.0.0.0         255.255.255.0   U     0      0        0 br0
>> lan    0.0.0.0         255.255.255.0   U     0      0        0 eth0
>> 169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0
>> eth2
>> 0.0.0.0         gw-wan-ip   0.0.0.0         UG    0      0        0 eth1
>> 0.0.0.0         gw-wan-ip   0.0.0.0         UG    0      0        0 eth2
>>
>> I'm using iptables to nat. The rule is the following
>>
>> iptables -t nat -A POSTROUTING -o eth1 -j SNAT --to-source x.x.x.x
>>
>> My main.cf has the following lines
>>
>> myhostname = server.mi_domain # this is pointing to IP y.y.y.y
>> mydomain = mi_domain # this is pointing to IP y.y.y.y
>> inet_interfaces = $myhostname, localhost
>>
>> Anyone know how can I set the postfix outgoing interface?
>>
>
> smtp_bind_address=your.ip.add.ress
>
> --
> Best Regards
>
> MfG Robert Schetterer
>
> Germany/Munich/Bavaria
>

Well, I tryed to define smtp_bind_address=y.y.y.y but that didn't
work, maybe because I had the same default router for both IP (x.x.x.x
and y.y.y.y). Or maybe the nat rule in iptables is causing the
redirection to x.x.x.x.

Anyway, I'll test again without iptables.

-- 
Sin otro particular se despide,
Gabriel Möll Ibacache
Ingeniero Civil en Computación

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