Before you begin the installation, ensuring your environment meets the necessary technical specifications is critical. Server Requirements
The main configuration file is located at /etc/pmta/config . Before launching the application, you must define your IP tracking, management ports, and security rules. Back up the default file before editing:
PowerMTA requires port 25 for SMTP traffic, port 80 or 443 for web tracking/management, and port 2525 or 587 for submission.
sudo nano /etc/pmta/config
http-access admin:password admin
1 Gbps port with a clean, un-blacklisted static IPv4/IPv6 allocation Software Requirements
# PMTA v6.0r3 Config
# For RHEL/Rocky Linux/AlmaLinux yum update -y && yum install -y wget curl epel-release # For Ubuntu/Debian apt update && apt upgrade -y && apt install -y wget curl Use code with caution. 3. Configure the Firewall
Digitally signs emails to prove they haven't been tampered with. Instructs receivers what to do if SPF/DKIM fails. 5. Post-Installation Strategy IP Rotation:
telnet 127.0.0.1 25
Port 25 (SMTP) must be completely unblocked by your hosting provider for both inbound and outbound traffic. Step 1: Initial Server Preparation
Typical filenames: