A mail server on ubuntu 18.04 postfix dovecot mysql

A great combination! Here's a step-by-step guide to setting up a mail server on Ubuntu 18.04 using Postfix, Dovecot, and MySQL:

Prerequisites

Ubuntu 18.04 LTS
A static IP address for your server
A domain name (e.g., example.com)
A MySQL database server (you can use the default MySQL package in Ubuntu)

Step 1: Install required packages

Update the package list and install the required packages:

sudo apt update
sudo apt install postfix dovecot-imapd dovecot-pop3d mysql-server

Step 2: Configure Postfix

Edit the Postfix configuration file:

sudo nano /etc/postfix/main.cf

Add the following lines to the end of the file:

mydestination = example.com
myhostname = mail.example.com
myorigin = $myhostname
mynetworks = 127.0.0.0/8 [::1]/128

Replace example.com with your domain name.

Step 3: Configure Dovecot

Edit the Dovecot configuration file:

sudo nano /etc/dovecot/dovecot.conf

Add the following lines to the end of the file:

mail_location = maildir:~/Maildir
first_valid_uid = 1000
first_valid_gid = 1000

Step 4: Configure MySQL

Create a new database and user for Postfix and Dovecot:

sudo mysql -u root -p

Create a new database:

CREATE DATABASE postfix;

Create a new user and grant privileges:

CREATE USER 'postfix'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON postfix.* TO 'postfix'@'localhost';

Replace password with a strong password.

Step 5: Configure Postfix to use MySQL

Edit the Postfix configuration file:

sudo nano /etc/postfix/mysql.cf

Add the following lines to the end of the file:

hosts = localhost
user = postfix
password = password
dbname = postfix
query = SELECT goto FROM alias WHERE address='%s'

Replace password with the password you created earlier.

Step 6: Restart services

Restart the Postfix and Dovecot services:

sudo service postfix restart
sudo service dovecot restart

Step 7: Test your mail server

Use a mail client like Thunderbird or Outlook to test your mail server. You can also use the telnet command to test the SMTP server:

telnet mail.example.com 25

Replace mail.example.com with your mail server's hostname.

Step 8: Configure DNS

Update your DNS records to point to your mail server. You'll need to create an MX record and a TXT record. The MX record should point to your mail server's hostname, and the TXT record should contain the SPF record.

That's it! You now have a working mail server on Ubuntu 18.04 using Postfix, Dovecot, and MySQL.

Mail Knowledge

A mail server on ubuntu 18.04 postfix dovecot mysql