These are the two pages that I used to get things working: You will then edit your PHP config file (php.ini) which, for me I installed via macports and was thus located at: /opt/local/etc/php56/php.ini. You will start by editing the Postfix config file located at: /private/etc/postfix/main.cf. Each file that needs to be adjusted is attached to this gist along with the relevant configuration options and settings. There are a couple of configuration files involved. All that needs to be done is to configure it AND PHP. How to get mail sending to work on OSX for development purposes ONLY.
