Hi, I have an anti spam postfix gateway running on an Ubuntu server. Currently I use relayhost on multiple web servers for sending mail through the gateway.
On the postfix gateway I have multiple secondary IPs. What I want to do is to configure the gateway so mail sent from a particular web server through the gateway to go out from a particular secondary IP from the gateway server like below: webserver1 -> gateway -> secondaryIP1 webserver2 -> gateway -> secondaryIP2 I tried to use sender_dependent_default_transport_maps but had no luck so far. Can someone please advise on how I can go with implementing this? Thanks in advance.
