EmailRelay is a free, open-source SMTP proxy that can be used to relay email messages between different email servers. In this tutorial, we will show you how to install EmailRelay on OpenBSD.
Before starting with the installation of EmailRelay on OpenBSD, you must have the following:
The first step is to update your OpenBSD system to make sure you have the latest software packages and security updates.
sudo pkg_add -u
This command updates all installed packages on your OpenBSD system.
EmailRelay is available in the OpenBSD packages repository. Use the following command to install EmailRelay on OpenBSD.
sudo pkg_add emailrelay
The package manager will install EmailRelay along with its dependencies.
After installing EmailRelay, it needs to be configured before you can use it. The configuration file of EmailRelay is located at /etc/emailrelay/emailrelay.conf.
You can open the configuration file using any text editor of your choice.
sudo vi /etc/emailrelay/emailrelay.conf
By default, EmailRelay is configured to listen on localhost port 8025 for incoming SMTP connections. You can change these settings as per your requirements.
After configuring EmailRelay, you can start it using the following command:
sudo /etc/rc.d/emailrelay start
This command starts the EmailRelay service. You can also use the status and restart options with the rcctl command to check the status and restart the EmailRelay service.
You can test the EmailRelay installation by sending an email to the email relay server using the telnet command.
telnet localhost 8025
This command establishes a connection with the EmailRelay server. After the connection is established, type HELO to identify yourself to the server, and then type MAIL FROM and RCPT TO to specify the sender and recipient email addresses.
If you do not encounter any errors, you have successfully installed and configured EmailRelay on your OpenBSD system.
EmailRelay is a powerful SMTP proxy that can be used to relay email messages between different email servers. This tutorial demonstrated how to install and configure EmailRelay on OpenBSD. With EmailRelay, you can improve the performance, reliability, and security of your email infrastructure.
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