Hi, I'm using postfix-3.5.7 on fedora32 on a server with four IP addresses (mail1, mail2, etc) on one interface. The problem is that all mail goes out the IP associated with the actual interface, not the virtual ones, which I believe is causing SPF to fail.
Is this a Linux problem? Would I have to have multiple instances of postfix running to be able to control which IP is used for which domain?
