Sample Powermta Configuration File Hot Work

postmaster admin@yourdomain.com host-name mail.yourdomain.com smtp-listener 0.0.0.0:25 http-mgmt-port 8080

ip 203.0.113.20 ip 203.0.113.21 max-senders-per-ip 30 delivery-rate 20000/minute

PowerMTA (PMTA) is a highly flexible Mail Transfer Agent (MTA) designed for high-volume email delivery. The core of its functionality lies in the config file, typically located at /etc/pmta/config . sample powermta configuration file hot

: Setting this to 200+ allows PMTA to send multiple emails over a single connection, significantly increasing speed. 3. Domain-Specific Rules ( )

This allows you to send low volumes from a new, "cold" IP address to a wide variety of recipient domains. The per-domain limit ensures that no single ISP sees a flood from your new IP. This gradual volume increase builds a positive reputation. After the daily limit is reached, subsequent messages for the day continue from the "warm" IP, which has an established reputation. These counters reset every day at midnight, providing a repeatable, automated warm-up schedule. postmaster admin@yourdomain

Always monitor your PowerMTA Web Console during the first 24 hours of a new campaign to spot throttling issues in real-time.

source warm-pool

The change from defaults: max-per-host-out 100 . Standard config uses 20. Bumping to 100 allows simultaneous delivery to large ISPs like Gmail. However, never exceed 200—Google’s postmaster guidelines suggest 100-120 per IP.

Ensure your Mail-From domain, From-Header domain, and DKIM signature domains match up to pass strict DMARC verification policies. This gradual volume increase builds a positive reputation

<source 127.0.0.1> process-x-forwarded-for yes always-allow-relaying yes max-message-size 50M smtp-service port 25 </source>