There is no "set and forget" config for PowerMTA. The top senders in the world treat their pmta.conf as a living strategy. As ISPs like Gmail and Yahoo roll out new anti-spam measures (like requiring one-click unsubscribe and strict DMARC), your PowerMTA must evolve.
PowerMTA handles DKIM natively—no external milter required. Generate a key pair and configure directly in the MTA.
# Listening on ports (Standard 25, Submission 587, and SMTPS 465) smtp-listener 0.0.0.0:25 smtp-listener 0.0.0.0:587 auth-type password always-allow-cc yes Use code with caution.
: Use defer-job settings to automatically pause sending if an ISP returns a "reputation low" error. 📊 Monitoring and Management
bounce-after 2d # Retry transient errors for 2 days before bouncing retry-interval 15m # Retry deferred emails every 15 minutes Use code with caution. 2. IP and VirtualMTA Architecture
There is no "set and forget" config for PowerMTA. The top senders in the world treat their pmta.conf as a living strategy. As ISPs like Gmail and Yahoo roll out new anti-spam measures (like requiring one-click unsubscribe and strict DMARC), your PowerMTA must evolve.
PowerMTA handles DKIM natively—no external milter required. Generate a key pair and configure directly in the MTA. powermta configuration guide top
# Listening on ports (Standard 25, Submission 587, and SMTPS 465) smtp-listener 0.0.0.0:25 smtp-listener 0.0.0.0:587 auth-type password always-allow-cc yes Use code with caution. There is no "set and forget" config for PowerMTA
: Use defer-job settings to automatically pause sending if an ISP returns a "reputation low" error. 📊 Monitoring and Management PowerMTA handles DKIM natively—no external milter required
bounce-after 2d # Retry transient errors for 2 days before bouncing retry-interval 15m # Retry deferred emails every 15 minutes Use code with caution. 2. IP and VirtualMTA Architecture