# 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)

Automated installer for **Postfix** on Ubuntu 24.04.  
Zero-click configuration — no interactive screens, no “mail name?” prompts.

This is a **production-ready mail server installer**, not a lab exercise.

---

## 1. Install

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

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