Sample Powermta Configuration File Hot _top_ Jun 2026

host-name vmta-hot-2.yourdomain.com dkim-sign yes </virtual-mta>

# 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

current config: cp /etc/pmta/config /etc/pmta/config.bak Edit the config: nano /etc/pmta/config Validate config: pmta reload (check logs for errors) Restart PMTA: systemctl restart pmta To help tailor this config further, could you tell me: How many IPs are you using? What is your estimated daily sending volume ?

Below is a specialized configuration snippet for your /etc/pmta/config file. It targets all major Microsoft domains using a wildcard pattern. sample powermta configuration file hot

<acct-file /var/log/pmta/bounce.log> acct-format "%d\t%t\t%vmta%\t%rcpt%\t%enhanced-status%\t%diagnostic%" acct-record bounce </acct-file>

source default-domain * use-vmta main-sender domain google.com use-vmta warmup-sender domain yahoo.com use-vmta warmup-sender

domain-key my-domain,*,/etc/pmta/dkim/private.key host-name vmta-hot-2

vmta main-sender auto-warmup true pool pool-high-volume dkim-signature "main" # See DKIM section below always-allow-vmta-domain true max-smtp-out 200 queue-type shared

Combines multiple IP addresses to spread reputation and increase throughput.

cold-virtual-mta vmta-cold-2 <domain *> max-cold-virtual-mta-msg 500/day</domain> </virtual-mta> It targets all major Microsoft domains using a

Using allows mapping specific source IPs to domains. Utilizing a for IP rotation helps manage reputation, ensuring that if one IP is blocked, others continue, as discussed in. 2. Hot-Specific Settings (Queue Management)

Opening an SMTP connection involves a "handshake" that consumes time and resources. By sending multiple messages (e.g., ) over a single connection, you significantly reduce the overhead per email. 3. Domain-Specific Throttling