On Oct 17, 2013 4:59 PM, "Roel Bouwman" <r...@qsp.nl> wrote: > > Hello, > > I've been trying to simplify our multi-instance Postfix setup, > however, I'm wondering whether it's actually possible. So I > was wondering if anyone could tell me whether my idea is futile > or could actually work. > > Let me explain. > > We run SMTP services for multiple organisations on a cluster > of systems. Each of those organisations has two inbound smtpd > processes provisioned (using their own unique port numbers). > One is for plain SMTP and one is for TLS. Both have custom > settings, e.g. for SSL certificates, hostnames, etc. > > This configuration is duplicated on each system in the cluster and > loadbalancers route inbound traffic from a customers' service-IP > to one of those smtpd process ports. > > That's all pretty straightforward and works as expected. > > However, where seperating outbound traffic is concerned things > get interesting. For most of our customers, this is of no > concern, outbound traffic is simply routed through the main > system's IP address, regardless of which inbound process has > accepted it. > > There are a few clients however for which we source outbound > traffic from a different IP address. This is currently done > by handling these in a seperate postfix instance, with their > own queue directory, configuration, etc. >
Have you considered use sender_dependent_default_transport_maps ? José Borges Ferreira
