Postfix - Redirect all outgoing mails to local user

While developing an application I often have to test, and use the email feature. Either I register and use my normal email, or a dump mailbox to collect the spam from development. But you can also redirect all outgoing email from postfix to a local users mailbox.

Start postfix

OS X ships with postfixed installed, you just have to start it.

sudo launchctl start org.postfix.master 

The command to stop it is very similar

sudo launchctl stop org.postfix.master 

Redirect

Open /etc/postfix/main.cf and add the following to the end of the file.

canonical_maps = regexp:/etc/postfix/canonical-redirect

If it does not exists create /etc/postfix/canonical-redirect and add some regexp to it.

/^.*$/ username

This will redirect all outgoing mails to the inbox of the user specified.

Restart postfix using the stop and start command

sudo launchctl start org.postfix.master 
sudo launchctl stop org.postfix.master 

Check inbox

With the mail command we see all mails.

$ mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/mail/simon": 1 message 1 new
>N  1 simon@Simons-MacBook  Wed Apr 22 12:33  27/1083  "http://localhost:8080: Reset Your Password"
?

Type ‘1’ and hit enter to open that email.

Written by Simon Ström as a way to remember. It's a dev log of thinks I want to remember.