Powermta Configuration Guide May 2026
<virtual-mta ip1> source-ip 192.0.2.1 max-smtp-out 5 max-msg-rate 500/h </virtual-mta> <virtual-mta ip2> source-ip 192.0.2.2 max-smtp-out 10 max-msg-rate 1000/h </virtual-mta>
pmta show queue pmta show stats pmta show vmta pmta show connections pmta show smtp-sessions Control sending across multiple dimensions: powermta configuration guide
<source 127.0.0.1> return-path bounce@example.com </source> PowerMTA captures DSNs and can route bounces to a local script or mailbox. <virtual-mta ip1> source-ip 192
<virtual-mta main> queue-type FIFO max-smtp-out 50 max-msg-rate 10000/h </virtual-mta> return-path bounce@example.com <
Per-domain rate limiting: