Mailu is an open-source mail server that you can use to send and receive emails. It is a relatively simple and straightforward application that can be easily installed on the Ubuntu server. Here is a step-by-step guide to help you install Mailu on Ubuntu Server Latest.
Before you start installing Mailu, ensure that you have the following:
You can create the required user account with sudo privileges using the command below:
$ sudo adduser <username>
$ sudo usermod -aG sudo <username>
Once you have the prerequisites, proceed with the following steps:
Before you can start installing Mailu, you must ensure that your Ubuntu Server has all the required dependencies. To do this, run the following command:
$ sudo apt update && sudo apt install git curl jq sudo gnupg2 apt-transport-https -y
This command will install all the required tools and modules for Mailu to run successfully.
Mailu runs on Docker, and as such, you need to ensure that your kernel parameters support Docker. To do this, run the following command:
$ sudo sysctl -w net.ipv4.ip_forward=1
This command will enable IP forwarding and is required for Mailu to work correctly.
Mailu depends on Docker, so you must install Docker on your Ubuntu Server. Run the following command to install Docker:
$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh
After the installation is complete, add your user account to the docker group. This will allow you to run Docker commands without being logged in as root.
$ sudo usermod -aG docker $USER
Now it's time to download and install Mailu. Run the following command:
$ cd && git clone https://github.com/Mailu/Mailu.git
Once the download is complete, navigate to the Mailu directory:
$ cd Mailu
In this Mailu folder, create a .env file and add the environment variables to configure the Mailu server.
$ cp example.env .env
$ nano .env
Update the .env file with the following configuration:
DOMAINNAME=example.com
SMTP_HOST=mail.example.com
SMTP_PORT=587
SMTP_USER=username@example.com
SMTP_PASSWORD=user_password
IMAP_HOST=imap.example.com
IMAP_PORT=993
FETCH_LIMIT=25
Once you have made the appropriate changes, save and exit the file.
In the Mailu folder, run the following command to generate the configuration files:
$ sudo docker-compose up -d
This command will pull container images, build them, and spin up the containers. It may take some time to complete, depending on your internet speed.
Verify that the Mailu containers are up and running by typing:
$ sudo docker-compose ps
You should see something similar to the output below:
Name Command State Ports
--------------------------------------------------------------------------------------------
mailu_admin_1 /usr/local/bin/run-admin.sh Up 0.0.0.0:80->80/tcp, 443/tcp
mailu_fetchmail_1 /usr/local/bin/fetchmail.sh Up
mailu_front_1 /usr/local/bin/run-nginx.sh Up 0.0.0.0:25->25/tcp, 0.0.0.0
mailu_postfixadmin_1 /usr/local/bin/run-php.sh Up
mailu_rspamd_1 /bin/sh -c /rspamd.sh Up 11334/tcp
mailu_smtp_1 /usr/local/bin/run-smtp.sh Up
mailu_submission_1 /usr/local/bin/run-submis ... Up 0.0.0.0:587->587/tcp
mailu_sogo_1 /usr/local/bin/run-sogo.sh Up 0.0.0.0:443->443/tcp, 80/tcp
You can now test the Mailu installation by sending an email to the address you just configured earlier.
Congratulations! You have successfully installed Mailu on Ubuntu Server Latest. You can now start using Mailu to send and receive emails as well as manage your email accounts. If you encounter any issues during the installation process, refer to the Mailu documentation for additional guidance.
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