Powermta Config File !new! -
The PowerMTA (PMTA) configuration file is the central nervous system of your email server. Located at /etc/pmta/config , this text-based file dictates how PowerMTA handles everything from basic networking to complex delivery rules for different ISPs.
If you inherit a broken PowerMTA config file, start from the example above, test each block in isolation, and scale up gradually. Good luck, and happy delivering.
<smtp-listener 0.0.0.0:2525> smtp-service on log-connections on require-auth off host-name mail.mydomain.com </smtp-listener>
<domain gmail.com> max-smtp-out 50 max-msg-rate 15/m max-msg-per-connection 5 use-starttls on dns-timeout 30 </domain> powermta config file
While not natively supported, high-volume senders often manage their config files through GitHub or Bitbucket to track changes and back up versions over time.
signing-table /etc/pmta/signing.conf <domain example.com> dkim-sign example.com </domain>
Virtual MTAs are essential for separating reputation streams. The PowerMTA (PMTA) configuration file is the central
DKIM signing is configured in the PowerMTA config file using the signing-table and dkim-sign directives.
on Linux) is the central brain of your mail transfer agent. It defines how the server listens for incoming mail, manages virtual MTAs, and controls delivery rates to different ISPs. Core Configuration Components Listener and Management Settings
Whether you send 100,000 or 100 million emails per day, mastering the PowerMTA config file is the single most valuable skill in your deliverability toolkit. Good luck, and happy delivering
<fbl yahoo.com> destination http://your-server.com/fbl/yahoo.php auth-username fbl_user auth-password secret </fbl>
The top of your config file usually contains global directives. These set the stage for how the server operates.
| Command | Purpose | | --- | --- | | pmta show config | Display effective config (merged + defaults) | | pmta show queue | Show queue statistics | | pmta show stats | Real-time delivery stats | | pmta show domains | Per-domain throttling status | | tail -f /var/log/pmta/panic.log | Catch critical errors | | tail -f /var/log/pmta/smtp.log | Watch live deliveries |
