Start by updating your system packages and installing the necessary dependencies.
Email servers are sensitive to clock skew. Ensure your hostname is an FQDN:
Before running commands, transfer your PowerMTA files to the server. You can use an SFTP client like WinSCP or follow the drag-and-drop method in the Bitvise SSH Client as shown in this PowerMTA Installation Tutorial . Upload the .rpm package to the /root or /tmp folder. Upload your license file to the same location. Step 2: Install the RPM Package
tar -xzf powermta-6.0r3.tar.gz cd powermta-6.0r3 ./configure --prefix=/usr/local/pmta make make install
If you have powermta-6.0r3.tar.gz :
In the highly competitive world of email marketing, having the right infrastructure is half the battle. PowerMTA (PMTA) by Bird (formerly Port25) remains the undisputed gold standard for high-volume, enterprise-grade email delivery. With the release of PowerMTA 6.0r3, administrators gain massive upgrades in (ARC validation, enhanced sender restrictions), performance (smarter source IP rate limiting), and flexibility (Ubuntu ARM support and XARF abuse report compatibility).
: Open port 25 for SMTP and your management port (e.g., 8080) in your firewall ( /var/log/pmta/pmta.log for any startup errors or delivery issues. configuration template for VirtualMTA settings or help setting up DKIM signing for this version?
# For CentOS/Rocky Linux yum update -y yum install wget zip unzip -y # For Ubuntu/Debian apt update && apt upgrade -y apt install wget zip unzip -y Use code with caution. Set your hostname to match your mailing domain: hostnamectl set-hostname ://yourdomain.com Use code with caution. 3. Installing PowerMTA 60r3
Within the extracted directory, run the installation script. This script handles the necessary dependencies and sets up the systemd service. sudo ./install Use code with caution. powermta 60r3 install
This is the standard port used for SMTP (Simple Mail Transfer Protocol) and is essential for your server to relay emails to other MTAs on the internet. Many VPS and hosting providers block port 25 by default to prevent spam. You must select a provider or configure your server to ensure this port is unblocked.
| Test | Command | Result | | :--- | :--- | :--- | | Service Status | systemctl status pmta | Active (running) | | Process Check | ps aux \| grep pmta | Master + 4 workers | | Port Listening | netstat -tlnp \| grep pmta | Port 8080 (mgmt) | | License Check | pmta show license | Valid, not expired | | Queue Injection | cp test.eml /var/spool/pmta/pickup/ | File consumed (moved to queue) | | Delivery Attempt | pmta show queue | Domains showing retries |
virtual-mta marketing smtp-source-host 192.168.1.101 dns-domain "marketing.yourdomain.com" helo-name "marketing.yourdomain.com"
Step 2: Extract and Install (Rocky Linux / Alma Linux / RHEL) Navigate to the /tmp directory and extract the tarball: cd /tmp tar -xvzf PowerMTA-6.0r3-*.tar.gz Use code with caution. Start by updating your system packages and installing
If you only have an RPM, use the alien tool to convert it first:
dnf install -y chrony systemctl enable chronyd --now
The main configuration file is located at /etc/pmta/config . You will need to edit this file to define your: The local IP(s) used for sending. Domain Keys (DKIM): Path to your private keys. SMTP Port: Usually set to 25 or 587 .