On 05/01/2012 04:44 AM, Vernon Fort wrote:
> Using the following provider setup:
>
> #NAME NUMBER MARK DUPLICATE INTERFACE GATEWAY OPTIONS COPY
>
> CABLE 1 1 main eth2 detect balance eth0
>
> EARTH 2 2 main eth1 detect fallback eth0
>
> With TRACK_PROVIDERS=Yes in shorewall.conf – I need the default outbound
> to always go out connection CABLE(1) eth2.
>
> However, I need all outbound SMTP traffic to go out the EARTH(2) eth1. I
> have set the following in tcrules:
>
> 2 $FW 0.0.0.0/0 tcp 25
>
> I read and re-read but I’m obviously missing something.

See the section of the Multi-ISP document entitled "Applications running 
on the Firewall - making them use a particular Provider" 
(http://www.shorewall.net/MultiISP.html#Local). Applications running on 
the firewall itself don't always obey the marking rules. If you are 
running Postfix as your MTA, the appropriate setting is 
smtp_bind_address = <ip addr of eth2>.

Hope that helps,
-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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