Hi, I've got mail gateways that act as MX's (mail is either relayed to our backend mail servers or forwarded to a users external email eg yahoo.co.uk) but are also used to send mail by our users (port 587). I'm wanting to have forwarded/relayed mail going out from one IP and stuff from submission going out from a different IP. Is this possible with multiple routes in master.cf or do I need to multiple instances of postfix? I think it requires the multiple instances, but I wanted to be sure before look at that sort of modification to our systems.
Thanks Guy -- Don't just do something...sit there!
