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# ==========================================
# Poste.io Mail Server Configuration
# ==========================================
# Your mail server's Fully Qualified Domain Name (FQDN)
MAIL_HOSTNAME=mail.amiirkhl.ir
# Server Timezone
TZ=Asia/Tehran
# ==========================================
# Performance & Feature Toggles
# ==========================================
# Disable ClamAV Antivirus to save RAM.
# TRUE saves ~$1 \text{ GB}$ of RAM. FALSE provides better security.
DISABLE_CLAMAV=TRUE
# Disable Rspamd (Anti-spam filter).
# Highly recommended to keep FALSE unless testing.
DISABLE_RSPAMD=FALSE
# Disable the built-in Roundcube Webmail interface.
# TRUE disables it, FALSE enables it.
DISABLE_ROUNDCUBE=FALSE
# ==========================================
# SSL / HTTPS Configuration
# ==========================================
# Controls Let's Encrypt and HTTP->HTTPS redirection.
# Since you are using custom SSL certificates manually, set this to OFF
# so Poste.io doesn't try to fetch its own certificates from Let's Encrypt.
HTTPS=OFF
# Absolute paths to your custom SSL certificates on the host machine
# Docker will mount these directly into the container.
SSL_CERT_PATH=/path/to/your/fullchain.pem
SSL_KEY_PATH=/path/to/your/privatekey.pem
# ==========================================
# Backup Configuration
# ==========================================
# Enable automated backups (TRUE/FALSE)
ENABLE_BACKUPS=TRUE
# Backup interval in cron format (e.g., "0 2 * * *" for daily at 2 AM)
BACKUP_CRON="0 2 * * *"
# Number of days to keep old backups
BACKUP_RETENTION_DAYS=7

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# Ignore the actual environment variables file
.env
# Ignore the data directory which will contain emails, databases, and private SSL keys
/data/
# OS generated files
.DS_Store
Thumbs.db
# Backup files
/backups/
backup.log

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# Poste.io Dockerized Mail Server
Self-hosted, Git-managed mail server for your personal domain using [Poste.io](https://poste.io/).
*Last Updated: 1405/01/02 (2026/03/22)*
## Project Structure
```text
poste-deployment
├── .env.sample
├── .gitignore
├── docker-compose.yml
└── README.md
```
## Setup Instructions
### 1. Clone & Configure
Clone this repository to your server:
```bash
git clone https://git.amiirkhl.ir/interanet/poste-deployment.git /opt/mailserver
cd /opt/mailserver
```
Create your environment file from the sample:
```bash
cp .env.sample .env
```
Edit `.env` and ensure `MAIL_HOSTNAME` and `TZ` are correct.
### 2. Custom SSL Configuration
Since Let's Encrypt is disabled (`HTTPS=OFF`), you must provide your own SSL certificates. This project maps your existing certificates directly into the container.
1. Open your `.env` file.
2. Locate `SSL_CERT_PATH` and `SSL_KEY_PATH`.
3. Set their values to the **absolute paths** of your certificate files on the host server (e.g., `/etc/ssl/amiirkhl.ir/fullchain.pem`).
*⚠️ **CRITICAL DOCKER WARNING**: The files specified in `SSL_CERT_PATH` and `SSL_KEY_PATH` **must** exist on your server before you run `docker compose up`. If Docker cannot find the files, it will mistakenly create empty directories with those names, which will crash the mail server.*
### 3. Start the Server
Start the Docker container:
```bash
docker compose up -d
```
Once running, navigate to `https://mail.amiirkhl.ir` to access the Admin GUI and set your master admin password.
---
## DNS Configuration Guide
To ensure your emails do not go to the spam folder, configure the following records in your DNS management panel (Cloudflare, ArvanCloud, etc.).
*⚠️ **Important**: Ensure any Proxy/CDN settings (like Cloudflare's orange cloud) are turned **OFF** (DNS Only) for these records.*
| Type | Name / Host | Value / Target | Priority |
| :---: | :--- | :--- | :---: |
| **A** | `mail` | `<Your-Server-IP>` | - |
| **MX** | `@` | `mail.amiirkhl.ir` | $10$ |
| **TXT** | `@` | `v=spf1 mx a:mail.amiirkhl.ir ~all` | - |
| **TXT** | `_dmarc` | `v=DMARC1; p=quarantine; rua=mailto:admin@amiirkhl.ir` | - |
### DKIM Setup
DKIM adds a cryptographic signature to your emails.
1. Log into the Poste.io Admin Panel (`https://mail.amiirkhl.ir`).
2. Navigate to **Virtual domains** -> Click on `amiirkhl.ir`.
3. Locate the **DKIM key** section.
4. Click "Generate new key" (if not already generated).
5. Copy the provided TXT record and add it to your DNS panel. Usually, the Name is `s1._domainkey` and the Value is `v=DKIM1; k=rsa; p=...`.
---
## Data Persistence & Backups
All user data, emails, databases, and configuration overrides are stored inside the `./data` folder.
### Automated Backups
This project includes a script to automate backups of your `./data` directory based on your `.env` configuration.
1. Ensure the backup variables are set in your `.env` file:
- `ENABLE_BACKUPS=TRUE`
- `BACKUP_CRON="0 2 * * *"` (Sets the schedule, e.g., daily at $2$ AM)
- `BACKUP_RETENTION_DAYS=7` (Deletes backups older than $7$ days)
2. Make the setup script executable and run it:
```bash
chmod +x setup_backup.sh
./setup_backup.sh
```
The script will automatically register a cron job on your host machine. Backups will be securely compressed as `.tar.gz` files and stored in the newly created `./backups` directory. Old backups are automatically pruned based on your retention settings.
### Manual Backup
If you prefer to trigger a backup manually at any time without using the script, simply run:
```bash
tar -czvf mail_backup_$(date +%F).tar.gz ./data/
```

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services:
mailserver:
image: analogic/poste.io:latest
hostname: ${MAIL_HOSTNAME}
restart: always
ports:
- "25:25"
- "80:80"
- "443:443"
- "110:110"
- "143:143"
- "465:465"
- "587:587"
- "993:993"
- "995:995"
environment:
- TZ=${TZ}
- DISABLE_CLAMAV=${DISABLE_CLAMAV}
- DISABLE_RSPAMD=${DISABLE_RSPAMD}
- DISABLE_ROUNDCUBE=${DISABLE_ROUNDCUBE}
- HTTPS=${HTTPS}
- ${SSL_CERT_PATH}:/data/ssl/server.crt:ro
- ${SSL_KEY_PATH}:/data/ssl/server.key:ro
volumes:
- ./data:/data
logging:
driver: "json-file"
options:
max-size: "10m"
max-file: "3"

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#!/bin/bash
# Load environment variables
if [ -f .env ]; then
export $(grep -v '^#' .env | xargs)
else
echo "Error: .env file not found."
exit 1
fi
if [ "$ENABLE_BACKUPS" != "TRUE" ]; then
echo "Backups are disabled in .env. Exiting."
exit 0
fi
PROJECT_DIR=$(pwd)
BACKUP_DIR="${PROJECT_DIR}/backups"
BACKUP_SCRIPT="${PROJECT_DIR}/run_backup.sh"
# Create backups directory
mkdir -p "$BACKUP_DIR"
# Create the actual backup script that cron will run
cat <<EOF > "$BACKUP_SCRIPT"
#!/bin/bash
# Auto-generated backup script
mkdir -p "$BACKUP_DIR"
cd "$PROJECT_DIR"
# Create new backup
FILENAME="mail_backup_\$(date +%F_%H-%M-%S).tar.gz"
tar -czvf "$BACKUP_DIR/\$FILENAME" ./data/ > /dev/null 2>&1
# Delete old backups based on retention days
find "$BACKUP_DIR" -type f -name "mail_backup_*.tar.gz" -mtime +$BACKUP_RETENTION_DAYS -exec rm {} \;
EOF
chmod +x "$BACKUP_SCRIPT"
# Remove existing cron job for this backup script to avoid duplicates
crontab -l | grep -v "$BACKUP_SCRIPT" | crontab -
# Add new cron job
(crontab -l 2>/dev/null; echo "$BACKUP_CRON $BACKUP_SCRIPT >> $PROJECT_DIR/backup.log 2>&1") | crontab -
echo "Backup automation configured successfully!"
echo "Schedule: $BACKUP_CRON"
echo "Retention: $BACKUP_RETENTION_DAYS days"
echo "Backups will be saved to: $BACKUP_DIR"