Self hosting?

Self hosting an email server is generally a bad idea. I’d recommend using Google Apps gmail service for hosting one. And DigitalOcean has a button which will setup the required network settings too! However, for sending email it’s sometimes pretty useful, we’ll setup sendmail for sending only.

sudo apt-get install mailutils

Choose “Internet Site” when prompted. And enter your domain name as the system mail name.

If it shows a subdomain (test.example.com) just delete it so it reads the main domain name (example.com).

Let’s quickly tweak the settings.

sudo nano /etc/postfix/main.cf

Find the line:

inet_interfaces = all

It was near the bottom in my version. Change this to read:

inet_interfaces = localhost

Save the file and restart the service.

sudo service postfix restart

Testing

We can test is this configuration works by running a simple command (substitute your email address).

echo "Test email body" | mail -s "Test email subject" youremail@example.com

It might be worth checking the junk mail too!

At this point you’re done, you might consider forwarding local system mail to your email address using the /etc/aliases file. It’s also worth setting up an SPF record to prevent spoofing and spam. However, the best option is to outsource it to Google!

Happy mailing.