Powermta Configuration Guide !free! May 2026
<limit-group bulk> max-smtp-out 100 max-msg-rate 10000/h max-bandwidth 10M </limit-group> <virtual-mta marketing> limit-group bulk </virtual-mta>
<source 0.0.0.0/0> auth-user myuser mypass require-auth yes </source> Better: restrict injection to localhost or a specific internal IP. Use domain stanzas to tune retries, timeouts, and throttling per recipient domain. powermta configuration guide
<domain *> max-smtp-out 20 max-msg-rate 1000/h max-msg-per-connection 10 use-starttls yes </domain> <bounce-handler bounces@example.com> command /bin/cat >> /var/log/pmta/bounces.log </bounce-handler> Logging <acct-file /var/log/pmta/acct.csv> record job,vmta,domain,rcpts,status,dsn-status,time roll daily </acct-file> 16. Restart & Verify After config changes: limit-group bulk <
pmta show queue pmta show stats pmta show vmta pmta show connections pmta show smtp-sessions Control sending across multiple dimensions: auth-user myuser mypass require-auth yes <
This configuration guide provides a complete foundation—extend it with FBL loops, custom bounce scripts, and multi-server clusters as needed.
