I have a requirement to deliver via 'X' when sender = 'A' /and/ recipient =
'B', else deliver via configured defaults.
I see how I could use sender_dependent_default_transport_maps to set nexthop
to 'X' when sender = 'A' but I still need to deal with the additional
condition that recipient = 'B'.
It's like I need multiple transport tables, dependent upon sender.
Is there any way to fulfill this requirement within the postfix framework?
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