OpenSMTPD is an open-source implementation of the Simple Mail Transfer Protocol (SMTP) that runs on Unix-like operating systems, including macOS. In this tutorial, we will guide you on how to install OpenSMTPD on macOS.
Before we begin, make sure you have the following requirements:
Follow the below steps to install OpenSMTPD on macOS:
Open your Terminal app and enter the following command:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
The above command will install Homebrew, which is a popular package manager for macOS.
Once Homebrew is installed, run the following command to install OpenSMTPD:
brew install opensmtpd
This command will download and install the OpenSMTPD package on your system.
After the installation is complete, you will need to configure OpenSMTPD to function correctly.
Open the smtpd.conf file using any text editor, as shown below:
sudo vi /usr/local/etc/opensmtpd/smtpd.conf
Add the following content to the smtpd.conf file:
listen on lo0
listen on eth0
Save and exit the file.
OpenSMTPD is now ready to start. Run the following command to start OpenSMTPD:
sudo launchctl load /Library/LaunchDaemons/org.opensmtpd.smtpd.plist
This will load OpenSMTPD as a daemon and allow it to start automatically whenever the system boots up.
In this tutorial, we have demonstrated how to install OpenSMTPD on macOS using Homebrew. Once installed, you can now configure OpenSMTPD to send and receive emails on your system.
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