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On Saturday 16 October 2004 18:00, James Hiscock wrote: |
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> > I could maybe achieve this using iptables on backupMX that |
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> > detects tcp:backupMX:25 to connect to tcp:mainMX:25 and redirects this |
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> > traffic to tcp:mainMX:1234. |
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> |
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> Using IPTables would probably be overkill -- especially since postfix |
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> handles this quite nicely. Take at a look at /etc/postfix/transport -- |
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> it should help (or 'man transport')... |
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> |
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> Basically, what you'd want to do is have an entry in backupMX's |
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> /etc/postfix/transport that would say something like: |
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> |
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> * smtp:[mainMX]:1234 |
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> |
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> ...which would forward all mail coming into backupMX on port 25 to |
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> mainMX on port 1234, using SMTP. The [] around mainMX suppresses MX |
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> lookups, so you won't get stuck in a mail loop. |
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Yeah, that's exactly what I was looking for, thx alot :D |
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> You'd also need to setup mainMX to listen on port 1234. To do so, edit |
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> /etc/postfix/master.cf, and duplicate the "smtp" line, like so: |
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[snip] |
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> ========================================================================== |
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> smtp inet n - n - - smtpd |
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> 1234 inet n - n - - smtpd |
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mainMX is already configured to listen on port 1234 using iptables; well, I |
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guess your way is a bit nicer, thanks. |
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Regards, |
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Christian Parpart. |
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-- |
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