<!-- 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>
per connection can prevent temporary blocks during a server warm-up phase. Backoff Mode : Enabling smtp-pattern-list sample powermta configuration file hot
powermta reload
# --------------------------------------------------------- # PowerMTA Configuration File # Version: 5.5+ Syntax # Focus: Deliverability, Domain Throttling, and Warm-up # --------------------------------------------------------- !-- SMTP LISTENER -->
It includes , IPs , authentication , DKIM signing , bounce/feedback loop handling , and resource limits typical for high‑volume email delivery. bounce/feedback loop handling