From: Justin Piszcz (jpiszczlucidpixels.com)
Date: Sat Mar 01 2008 - 07:37:18 CST

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On Sat, 1 Mar 2008, Daniel Kauffman wrote:

> Are there plans to implement sender_dependent_transport_maps, or does similar
> functionality already exist?
>
> I would like to set myhostname and smtp_bind_address for each sender domain.
> This would allow mail from each sender domain to originate from a unique ip
> address for that sender domain. One of the benefits is that if one of my
> clients ends up on a blacklist, none of my other clients are affected. Also,
> such a setup makes it easy to track bandwidth usage by ip address.
>
> Here is a proposed configuration...
>
> In main.cf:
>
> sender_dependent_transport_maps = sender_dependent_transport_maps.cf
>
>
> In sender_dependent_transport_maps.cf:
>
> sender.com sendertransport:nexthop
>
>
> In master.cf:
>
> sendertransport unix - - n - - smtp
> -o myhostname=sender.com
> -o smtp_bind_address=0.0.0.0
>
>
> Pointers to existing wheels are greatly appreciated!
>
> Thanks!
>
> Daniel Kauffman
>

This has been asked before, the solution is to run 2 instances of postfix.

Justin.

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