Email relay configuration on your Mac OS X2 minutes to read
There are times when you wish your development stack could send some emails. Well, there is an easy way to do that on the Mac OS X (this was tested from the SL, Lion and Mountain Lion, but it should work in other versions, as also with Unix-like systems that, of course, have Postfix installed).
Start by adding these settings to your
relayhost = [smtp.example.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = smtp_sasl_local_domain = yourdomain.com broken_sasl_auth_clients = yes smtpd_pw_server_security_options = noanonymous smtp_use_tls=yes smtp_tls_security_level=encrypt tls_random_source=dev:/dev/urandom
I normally set this settings at the end of the file so I don't have to search it
when I need to make a change. Also, I normally wrap it with something like
# me@mymachine comment, so it's easy to search for whatever configurations I
made on the original file. This doesn't mean you don't need to backup your
settings file, it only means that it will be easier than to make
diff main.cf main-backup.cf or whatever.
If you use a gmail account, you can replace the line:
relayhost = [smtp.example.com]:587
relayhost = smtp.gmail.com:587
and if you're using your development machine just replace:
smtp_sasl_local_domain = yourdomain.com
smtp_sasl_local_domain = localhost
or remove it, since it isn't necessary for localhost.
If your relaying mail server needs authentication, the next step you'll need to
do is to create the file
/etc/postfix/sasl_passwd and add the following lines:
So, for the gmail account it goes something like:
Don't forget to replace username with your actual username and password with your password! 🙂
Now you need to create the
/etc/postfix/sasl_passwd.db file from the
/etc/postfix/sasl_passwd one, and keep them safe:
sudo postmap hash:/etc/postfix/sasl_passwd sudo chown root:wheel /etc/postfix/sasl_passwd /etc/postfix/sasl_passwd.db sudo chmod 600 /etc/postfix/sasl_passwd /etc/postfix/sasl_passwd.db
There you go, all set. You should now be ready to send out some emails. Try it by sending an email from the terminal using:
echo 'Email is now working! :)' | mail -s 'Test Email' <firstname.lastname@example.org>
If something goes wrong, you can monitor the log file at
order to see what is happening, and use the
mailq program to see the state of
the mail queue.
If you have the 2-step verification on your google account, then you'll have to generate an application-specific password (I think you should know where is it).