Wietse Venema wrote on 2/10/23 08:24:
There are two features that support sender-dependent routing: sender_dependent_relayhost_maps This looks up a relayhost value that depends on sender. Like relayhost, this uses default_transport. It is seached with the envelope sender address and @domain. sender_dependent_default_transport_maps This overrides transport and destination. It is seached with the envelope sender address and @domain. In most cases, sender_dependent_relayhost_maps will do the job. sender_dependent_default_transport_maps can be used to implement quality of service for different senders.
Thank you very much. Those indeed sound like they're exactly what I need (as you say, probably sender_dependent_relayhost_maps is all I need). I'll have a shot at reconfiguring and testing my installation when I get a chance, sometime in the next few days.
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