Hi, I wonder how postfix decides on what IP address to bind to / initiation IP connections from, in terms of sending outgoing mail?
I have a server with 5 IP addresses, where the IP address I'm using for receiving mail is the main IP address for the machine. I've set the following in main.cf to enforce this: inet_interfaces = x.x.x.170,127.0.0.1 the range of IP addresses the machine is configured to ranges from .170 to .174. interestingly, when my postfix sends mail, it initiates connections from IP address .174, instead of .170. this is despite the fact the postfix doesn't listed on anything but .170. I wonder why this is happenning, and how one can force postfix to initiate connections from an explicitly specified IP address. thanks, Akos
