Sample Powermta Configuration File Hot [top] <Best Pick>

# SMTP Listener on all IPs, port 25 and 587 smtp-listener 0.0.0.0:25 smtp-listener 0.0.0.0:587 password "YOUR_SECURE_PASSWORD" authentication-method password # Source configuration for local/authorized senders always-allow-relaying yes process-x-virtual-mta yes Use code with caution. Copied to clipboard 3. Virtual MTA (Delivery)

The most common mistake is setting max-msg-rate unlimited . Major ISPs (Gmail, Outlook, Yahoo) will block you if you send too fast from a new IP.

log-file-rotate daily

A "cold" or default PMTA config suffers from: sample powermta configuration file hot

log-path /var/log/pmta log-file delivery.log log-level info syslog yes smtp-transaction-log yes smtp-transaction-log-path /var/log/pmta/transactions account-log yes account-log-path /var/log/pmta/account

virtual-mta vmta1 virtual-mta vmta2

# ================================================== # PowerMTA Configuration File # ================================================== # Sample PowerMTA configuration file showcasing # high-performance and deliverability-focused settings. # SMTP Listener on all IPs, port 25 and 587 smtp-listener 0

mailbox /var/mail/%u alias-map /etc/aliases

Defines how to treat email sent to specific domains (e.g., gmail.com ).

# Define specific domain limits here (e.g., Gmail, Yahoo) domain gmail.com max-smtp-msg-rate 100/h max-msg-rate 50/s max-connections 20 Major ISPs (Gmail, Outlook, Yahoo) will block you

dkim-signature warmup domain yourwarmupdomain.com selector feb2025 private-key-file /etc/pmta/dkim/warmup.pem