# Postfix for Ubuntu 24.04 Server
[![OS](https://img.shields.io/badge/ubuntu-24.04-E95420)](#)
[![Shell](https://img.shields.io/badge/shell-bash-121011)](#)
[![MailServer](https://img.shields.io/badge/server-postfix-8B1E3F)](#)
[![License](https://img.shields.io/badge/License-MIT-green)](./LICENSE)

Install Postfix on Ubuntu 24.04 server.

This is not a demo and not an experiment.  
No installer prompts, no guesswork — reliable and repeatable mail server deployment.

## Why this installer exists
Postfix itself is simple. The interactive installer is not. This avoids incorrect menu selections.

## What this installer does  
✔ Fully non-interactive setup  
✔ Optional mailutils integration  
✔ Runs as a proper MTA  
✔ Suitable for relay + local delivery  
✔ Consistent, repeatable configuration  

## What this installer does *NOT* do
It won’t stop you from running the script without reading the documentation like there’s no tomorrow.  
Skip the README, and whatever happens next is your headache, not a bug report.

---

## 1. Prepare the system

```
sudo apt update -y
```

## 2. Download the installer

```
git clone https://git.x-files.dk/mail/postfix-ubuntu.git
```

```
cd postfix-ubuntu
```

## 3. Run the installer

```
sudo ./postfixinstall -m <yes|no>
```

### Flags

| Option | Meaning |
|---|---|
| `-m yes` | Install Postfix + Mailutils |
| `-m no`  | Install only Postfix |

Examples:

```
sudo ./postfixinstall -m yes    # Postfix + Mailutils
sudo ./postfixinstall -m no     # Pure Postfix only
```

---

## 2. Service Status

```
systemctl status postfix
systemctl enable postfix
```

Send test mail (if Mailutils installed):

```
echo "Postfix is alive" | mail -s "Test" root@localhost
```

---

## 3. Default Configuration

Main config file:

```
/etc/postfix/main.cf
```

Common values:

```
myhostname = mail.example.com
myorigin   = /etc/mailname
mydestination = localhost, $myhostname
relayhost =
inet_interfaces = all
```

Reload config:

```
sudo systemctl reload postfix
```

---

## 4. TLS + Certbot Integration (optional)

Recommended additions:

```
smtp_tls_security_level = may
smtp_tls_loglevel = 1
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
```

Apply:

```
sudo systemctl reload postfix
```

---

## 5. Useful Commands

List queue:

```
mailq
```

Flush queue:

```
postfix flush
```

Logs:

```
journalctl -u postfix -f
```

Control service:

```
systemctl stop postfix
systemctl start postfix
systemctl reload postfix
```

---

### More Information

More guides and documentation can be found on [wiki.x-files.dk](https://wiki.x-files.dk)

---

### License
Licensed under the [MIT License](./LICENSE).

---