Am 01.08.2017 um 20:39 schrieb Abi Askushi: > Since this is socks proxy and not vpn you could redirect postfix traffic > with iptables to the port your socks proxy listens. Plenty examples on > google.
if you redirect the full postfix traffic you might end up in asymetric routing. Most important question: does this postfix accept connections/mails from the outside world? If it does: which path these connections come to postfix? Via VPN/Socks or directly? If **ALL** connections to this postfix come via VPN/Socks simple iptables rules as suggested by Abi will work. Otherwise I gets more complex and the OP needs a routing based on the source of the pakets. The goal is to bring answers from postfix to the exact same path as the query from outside came in (means correct interface and gateway). And that can only be achieved by policy based routing.
