I am, I believe, trying to use the "sender-dependent" feature of Postfix to send messages from different senders via different routes:
- If a message is from firstname.lastname@example.org, I want it to be sent via relay.example.net.
- If a message is from anyone else, I want it to be directly delivered, as is the default right now on the server.
All sorts of documentation points to
/etc/postfix/dependent, but nothing tells me the format of this file.
I have destination-dependent relaying working using
/etc/postfix/transport, but I need to get sender-dependent relaying working. Thanks.