<!-- Run as a background service --> <spool-enabled>yes</spool-enabled>
<schedule 22-06> set max-smtp-out 50 set throttle-smtp-out 10000 </schedule>
<virtual-mta vmta-hot-1> smtp-source-host 203.0.113.10 vmta-hot-1.yourdomain.com smtp-source-port 25 host-name vmta-hot-1.yourdomain.com dkim-sign yes <domain *> max-msg-rate 72000/h max-smtp-out 50 </domain> </virtual-mta> sample powermta configuration file hot
<domain *> dkim-sign yes dkim-identity @mydomain.com dkim-private-key-file /etc/pmta/keys/mykey.pem spf-envelope-from mydomain.com </domain>
: Always enable use-starttls for providers that support it (like Gmail and Outlook) to encrypt your mail in transit . Too many connections look like a DDoS attack
Sign up for Microsoft's Smart Network Data Services (SNDS) to monitor your IP reputation, spam complaint rates, and spam trap hits. Pair this with the Junk Email Reporting Program (JMRP) to receive automated feedback loops when users mark your mail as spam.
Too many connections look like a DDoS attack. A lower number (e.g., 30-50) is safe, whereas a hot setup might push this to 100+ over time 1.2.4. 4. max-msg-per-connection max-msg-per-connection , PMTA removes the file from the
, PMTA removes the file from the hot folder once it has been moved into the internal delivery spool. Best Practices for Implementation File Permissions : Ensure the user has read and write permissions for the specified path. Atomic Writes