smtp-source-ip 192.0.2.55 host-name ://yourdomain.com virtual-mta vmta-marketing-01 virtual-mta vmta-marketing-02 Use code with caution. 3. Source Blocks (Inbound Authentication)
: Defines outgoing IPs ( smtp-source-ip ) for specific senders.
PowerMTA allows you to split your configuration into multiple files using the <include> directive. This creates a "linked" structure:
The configuration file contains sensitive SMTP credentials and IP infrastructure details. Ensure it is locked down. chmod 640 /etc/pmta/config chown pmta:pmta /etc/pmta/config Use code with caution. powermta config file link
When you modify your config file, always validate the syntax before restarting the daemon. Running a broken configuration will crash your mail server. 1. Validate Syntax via Command Line
: Specifies the IP PMTA uses for outgoing connections, often used for IP rotation .
By tailoring your /etc/pmta/config file, you ensure optimal delivery rates and high-speed throughput for your mail server. smtp-source-ip 192
Always specify full absolute paths (e.g., /etc/pmta/subfolder/file.conf ) in your include directives. Relative paths can cause resolution errors during daemon startup.
: Settings that apply to the entire server.
The PowerMTA config file is a plain‑text file (usually XML‑style directives) that tells PMTA how to operate. It contains: PowerMTA allows you to split your configuration into
Instead of applying rules to every domain, you can customize settings for specific ISPs (e.g., Gmail, Yahoo).
PowerMTA is a highly scalable, open-source email server designed for large-scale email service providers. Its configuration is crucial for setting up and managing email services efficiently. The configuration files are typically located in a specific directory, which can vary depending on how PowerMTA was installed and the operating system being used.
host-name : The fully qualified domain name (FQDN) for the local host, such as mail.yourdomain.com .
# /etc/pmta/config example snippet <domain *> max-smtp-out 10 use-starttls yes </domain>