####################################################################### # PowerMTA (PMTA) Hot Configuration Sample - Production Ready # Location: /etc/pmta/config #######################################################################
This config assumes you have already established a good IP reputation.
max-deliveries-per-connection 20 max-delivery-threads 200 max-message-size 52428800 ; 50MB max-queued 200000 log-level info delivery-queue /var/spool/pmta/queue statistics true statistics-file /var/log/pmta/stats.log pid-file /var/run/pmta/pmta.pid
To avoid being blocked by major ISPs like Gmail or Yahoo, you can set specific limits on how fast your server sends mail. sample powermta configuration file hot
: Generate a private/public key pair and place the private key in the path specified in the Apply Changes Test for syntax errors: pmta --check-config pmta debug Restart the service: service pmta restart systemctl restart pmta Monitor Performance : Access the web monitor at
Check the logs in /var/log/pmta/ if you experience issues; especially panic.log for fatal errors and acct.csv for delivery statuses.
Master Your Mail: A Sample PowerMTA Configuration File for High-Volume ("Hot") Mailing Master Your Mail: A Sample PowerMTA Configuration File
Are you primarily sending ?
PowerMTA (Message Transfer Agent) is the industry standard for high-volume senders. Below is a tailored specifically for the high-engagement, high-expectation verticals of Lifestyle, Travel, Fashion, and Digital Entertainment.
Softening your delivery speed automatically when Microsoft issues temporary throttling blocks (4xx errors). If you have 5 IPs
Use wildcard domains ( ) for common settings and only specify overrides for large ISPs.
acct-file /var/log/pmta/acct.csv record b,r move-interval 5m delete-after 30d record-fields time,tstamp,dsn,envFrom,envTo,reason,vmta,ip,sender,rcpt,size,status
: Before restarting the service, run pmtad --check-config via your command line to catch any syntax errors or missing paths.
If you have 5 IPs, you can distribute the load. If one IP gets a bad reputation, you can temporarily disable its virtual MTA without stopping the entire server 1.2.4 . 2. Specific Rules