How to Install EmailRelay on Alpine Linux Latest

EmailRelay is an open-source tool that allows you to relay email messages between different email systems. In this tutorial, you will learn how to install EmailRelay on Alpine Linux Latest.

Prerequisites

Before you start, make sure you have the following:

• An Alpine Linux Latest instance with root access
• A basic understanding of the command line

Step 1: Update Packages

Start by updating the packages on your Alpine Linux instance:

apk update

Step 2: Install Dependencies

EmailRelay requires several dependencies. To install them, run the following command:

apk add build-base openssl-dev libwrap libwrap-dev libx86emu libx86emu-dev libevent libevent-dev librsync librsync-dev libzstd libzstd-dev libtool autoconf automake

Step 3: Download and Extract EmailRelay

Next, download the latest version of EmailRelay from the official website using the following command:

wget https://github.com/rnwood/smtp-libs/archive/refs/tags/v1.7.tar.gz

Then, extract the downloaded file using the following command:

tar -xvf v1.7.tar.gz

Step 4: Compile and Install EmailRelay

Navigate to the extracted directory and compile and install EmailRelay using the following commands:

cd smtp-libs-1.7
./autogen.sh
./configure
make
make install

Step 5: Configure EmailRelay

Create a configuration file for EmailRelay using the following command:

nano /etc/emailrelay/emailrelay.conf

Here is a basic EmailRelay configuration file:

# EmailRelay Configuration File

# The email address to send error messages to
admin = postmaster@yourdomain.com

# The SMTP server to forward email messages to
smarthost = your-smtp-server.com:25

# The domain name that your email server uses
domain = yourdomain.com

# List of IP addresses or subnets to allow relaying
acl = 127.0.0.1/32

Adjust the configuration file to suit your needs.

Step 6: Start EmailRelay

Finally, start the EmailRelay service using the following command:

rc-service emailrelay start

To ensure that EmailRelay starts automatically at boot time, run the following command:

rc-update add emailrelay default

Conclusion

You have successfully installed and configured EmailRelay on Alpine Linux Latest. With this setup, you can start relaying email messages between different email systems.

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