From: Joris Dobbelsteen (jorisfamiliedobbelsteen.nl)
Date: Tue Jul 21 2009 - 15:53:51 CDT

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I'm using Postfix 2.3 (with debian etch, but I'm planning to go to
postfix 2.5 with debian lenny). I'm using the postfix box solely for
relaying e-mail and doing virus/spam scanning. Mail for local domains is
relayed to a local server and everything else goes to my ISPs server. I
currently use transport_maps to manage this and that is working fine for
a couple years.

Now I want to reduce the use of my ISP mail server. For IPv4 this is not
possible: its troublesome with residential access & my ISP blocks
outgoing port 25. However I have an IPv6 ip address where mail delivery
is available.

Is there any possibility to use the "transport_maps" to indicate
multiple destinations?
I've seen reports that it didn't work for older versions. A few creative
solutions where provided. Maybe someone else has a good idea?

(To be honest, it has been over 2 years ago that I have looked very
deeply in how Postfix moves mail messages around all classes and I have,
not suprisingly, forgotten the details in the meanwhile, because the
configuration simply worked and did not need modification).

- Joris

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