sudo ufw allow 25/tcp sudo ufw allow 8080/tcp sudo ufw reload Use code with caution. If utilizing Firewalld (RHEL/CentOS):
4 vCPUs or higher (Optimized for multi-threaded processing)
# Local interface (change to your server's IP) source 192.168.1.100 always-allow-relaying yes # Allow local scripts to inject process-x-remote true # Trust X-Remote headers for injection smtp-service "inbound"
You can verify the status and track delivery performance by accessing the PowerMTA Web Monitor (usually at powermta 60r3 install
# Global Settings log-file /var/log/pmta/pmta.log queue-directory /var/spool/pmta # Inbound SMTP Listener (Port 25 or 587) smtp-listener 0.0.0.0:25 # Management Console Web HTTP Port http-mgmt-port 8080 http-access 127.0.0.1 admin http-access 0.0.0.0/0 monitor # Define the Virtual MTA Network Link smtp-source-ip 192.168.1.50 # Replace with your actual Public IP host-name ://yourdomain.com # Replace with your authenticated domain # Relay Rules - Control who can send through this server always-allow-relaying yes always-allow-relaying no smtp-service no # Standard Domain Macro Performance Settings max-smtp-out 20 bounce-after 4d retry-after 15m Use code with caution. Step 5: Setting Up DKIM signing
On CentOS 7, systemctl stop pmta sometimes times out after 90s. Resolution: Override systemd timeout:
You should see your allowed domains, sending limits, and expiration date. sudo ufw allow 25/tcp sudo ufw allow 8080/tcp
The main configuration file is located at /etc/pmta/config . Edit it with your preferred text editor (nano, vim, or mcedit):
by running sudo service pmta restart .
mkdir -p /var/log/pmta /var/spool/pmta cp configs/* /usr/local/pmta/etc/ Resolution: Override systemd timeout: You should see your
PowerMTA is not open-source software; you must obtain the installation package from your licensed distributor. Once you have the package URL, download it to your server. The latest version is 6.0r3, which includes a refined installer that simplifies the setup process.
The core behavior of PowerMTA is governed entirely by /etc/pmta/config . Backup the default placeholder configuration and generate a clean version: