Localhost postfix relay on OS X


sudo vi /System/Library/LaunchDaemons/org.postfix.master.plist


<plist version="1.0">
<dict>
     <key>Label</key>
     <string>org.postfix.master</string>
     <key>Program</key>
     <string>/usr/libexec/postfix/master</string>
     <key>ProgramArguments</key>
     <array>
             <string>master</string>
             <!--string>-e</string-->
             <!--string>60</string-->
     </array>
     <key>QueueDirectories</key>
     <array>
             <string>/var/spool/postfix/maildrop</string>
     </array>
     <key>AbandonProcessGroup</key>
     <true>
     <key>RunAtLoad</key>
     <true/>
     <key>OnDemand</key>
     <false/>
     <key>KeepAlive</key>
     </true>
</dict>
</plist>


sudo launchctl unload /System/Library/LaunchDaemons/org.postfix.master.plist
sudo launchctl load /System/Library/LaunchDaemons/org.postfix.master.plist
sudo launchctl start org.postfix.master