Enabling postfix for outbound relay via Gmail on OS X Lion (and newer OSX versions)
Update on Oct 25, 2014: Updated For OS X Yosemite. Update on Dec 21, 2013: I have posted an update to the launchd setup for postfix. You should still read through this post, as most of the setup remains common to both posts. The background Mac OSX comes with the postfix MTA, which is a fully featured SMTP server. Under normal circumstances, there is usually no need to enable or configure this software, as most email access is usually done via GUI clients such as the Mail.app - which uses the POP/IMAP and SMTP settings to connect with the email service provider. ...