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widyachacra wrote: |
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> we have two internet links. one is a leased line other one is an ADSL |
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> broadband line. now i need to route our outgoing emails through the ADSL |
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> broadband line. how can i do that? |
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> |
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> we're using Qmail. |
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> |
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> how to route outgoing emails through a specific network card or IP ADDRESS? |
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> |
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> Please help me. |
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|
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I had the same issue when I had to force my mail to use my ADSL connection |
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instead of my cable connection which is my default route because my cable IP |
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was blacklisted. |
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|
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I solved it by marking packets to port 25 and then routing them via my adsl route. |
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I used the following script on my router where eth2 connects to my LAN on |
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10.0.0.0. |
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192.168.1.1 is my adsl router on eth0 and eth1 is my cable modem. |
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|
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... |
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# Force mail to be sent via ADSL because @home is blacklisted |
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iptables -v -t mangle -A PREROUTING -i eth2 -p tcp --dport 25 \ |
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-j MARK --set-mark 2 |
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... |
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|
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## ROUTING ## |
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|
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# Define adsl routing table used by packets MARK'ed with 0x02 |
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ip rule add fwmark 2 table adsl |
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ip route add 10.0.0.0/24 dev eth2 table adsl |
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ip route add 127.0.0.0/8 dev lo table adsl |
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ip route add default via 192.168.1.1 dev eth0 table adsl |
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|
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# Define cable routing table used by packets MARK'ed with 0x01 |
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ip rule add fwmark 1 table cable |
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ip route add 10.0.0.0/24 dev eth2 table cable |
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ip route add 127.0.0.0/8 dev lo table cable |
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ip route add default via 82.73.126.1 dev eth1 table cable |
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|
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|
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Hope this helps, |
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-- |
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/ Xavier Neys |
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\_ Gentoo Documentation Project |
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/ |
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/\ http://www.gentoo.org/doc/en/ |
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