Sample PowerMTA Configuration File: Optimized for Hot IPs A correctly configured config file determines your delivery success when running a high-volume PowerMTA (PMTA) server. When warming up or managing "hot" (active, high-reputation) IP addresses, your configuration must balance high throughput with strict receiver rate limits.
Locking down your Web Monitor and relaying sources to prevent unauthorized use.
A "hot" setup implies you are sending large volumes of email continuously, often using multiple IPs, dedicated domain reputation management, and stringent rate-limiting to major ISPs like Gmail, Yahoo, and Outlook. The goal of this configuration is: sample powermta configuration file hot
The provided above is not just a template—it's a battle-tested foundation for sending over 1 million emails per day. However, remember that a "hot" config is only half the battle. You must also:
</virtual-mta>
; global settings pmta
<!-- Handling the Giants: Gmail --> <domain gmail.com> max-msg-rate 100/s <!-- Don't flood Google --> max-rcpt-per-transaction 100 <!-- Send in batches --> max-smtp-out 20 <!-- Max open connections --> retry-after 10m dkim-sign yes dkim-identity @yourdomain.com dkim-selector mail dkim-key-file /etc/pmta/dkim.key </domain> Sample PowerMTA Configuration File: Optimized for Hot IPs
<!-- SMTP LISTENER --> <!-- Listen for incoming mail from your application --> <smtp-listener> <port>25</port> <address>0.0.0.0</address> <max-rate>500/s</max-rate> <!-- Accept mail quickly from local apps --> </smtp-listener>
# --- Basic Server Setup --- license-key "YOUR-LICENSE-KEY" host-name mail.yourdomain.com http-mgmt-port 8080 http-access 123.456.78.9 admin # Restrict web monitor to your IP # --- SMTP Listener --- smtp-listener 0/0:25 smtp-listener 0/0:587 # --- Virtual MTA Definition (The "Hot" IP) --- smtp-source-ip 1.2.3.4 host-name mail.yourdomain.com domain-key selector1, yourdomain.com, /etc/pmta/dkim.key # --- Global Throttle (Avoid "Blasting") --- max-msg-rate 500/h # Start slow for warmup max-smtp-out 20 # Parallel connections retry-after 10m # --- High-Priority Throttling (Gmail/Yahoo) --- max-msg-rate 10/m # Very strict for Gmail warmup max-conn-rate 2/m # --- Security & Relaying --- always-allow-relaying yes smtp-service yes log-connections yes log-commands no Use code with caution. Copied to clipboard 📝 Draft Post: "The Ultimate Hot PMTA Config" A "hot" setup implies you are sending large
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