Sample Powermta Configuration File Hot

Sample PowerMTA Configuration — Hot Delivery Setup

Below is a concise, production-ready example PowerMTA (PMTA) configuration focused on "hot" (high-throughput, reputation-conscious) email delivery. It includes global settings, listener(s), virtual MTAs, smart host routing, per-IP and per-domain throttling, bounce handling, and feedback loop/dkim/spf basics. Adjust names, IPs, domain, credentials, and limits for your environment.

TLS

tls-enabled yes tls-listener-port 465 tls-certificate /etc/pmta/ssl/mail1.example.com.crt tls-key /etc/pmta/ssl/mail1.example.com.key tls-ca-cert /etc/ssl/certs/ca-bundle.crt tls-protocols TLSv1.2,TLSv1.3 tls-ciphers HIGH:!aNULL:!MD5 sample powermta configuration file hot

3. Virtual MTA Pools with Source Hashing

source-hash true ensures the same recipient domain always uses the same source IP. This is critical for maintaining reputation. Without hashing, rotating IPs randomly can cause ISPs to see "new" IPs for known recipients, triggering spam filters. Sample PowerMTA Configuration — Hot Delivery Setup Below

--- Global Settings ---

smtp-port 25 http-mgmt-port 8080 max-smtp-out 100 hostname mailer.lifestyle-bureau.com # DNS settings dns_server = "8

✅ Sample “Hot” PowerMTA Config (Key Sections)

1. Global Settings

<domain *>
  max-smtp-out 20
  queue-size 2000
  max-message-size 10M
  use-remote-queue true
</domain>

# DNS settings dns_server = "8.8.8.8" dns_timeout = 10

hide-message-source true: Removes IP information from email headers to protect privacy, often used to prevent internal IP exposure. Steps to Apply

Note: Replace placeholders (like your-ip, your-domain.com, your-dkim-selector) with your actual values.