Powermta Configuration Guide Top -

# In config memory-path /dev/shm/pmta # Use RAM disk for transient queue queue-dir /fast-ssd/pmta/queue # Fast SSD, not NFS processes 12 max-queue-size 50G

: Sign outgoing mail with a private key. In the config file, point to your selector and private key.

Before launching your first email campaign, verify that your configuration satisfies this final compliance check: Action Item Verification Command / Method Run pmtad --check-config to verify syntax errors. DNS Alignment powermta configuration guide top

logrotate /var/log/powermta.log daily missingok notifempty delaycompress compress maxsize 100M maxage 7 postrotate /usr/sbin/powermta reload endscript

v=spf1 ip4:YOUR.SERVER.IP include:_spf.google.com -all # In config memory-path /dev/shm/pmta # Use RAM

Configure dkim-body-canonization and dkim-header-canonization to simple or relaxed based on your specific needs, but ensure they match the DNS record exactly.

<domain outlook.com> max-msg-rate 500/h # Respect Microsoft's strict rate limits. max-smtp-out 10 # Limit concurrent connections. use-starttls yes dkim-sign yes # Sign emails for this domain. retry-after 10m # Wait 10 minutes before retrying a soft bounce. </domain> DNS Alignment logrotate /var/log/powermta

<domain yahoo.com> max-msg-rate 500/h max-connect-rate 20/m max-smtp-out 25 </domain>

PowerMTA is a popular email server software used by many organizations to manage their email infrastructure. It offers a robust set of features, including high-performance email delivery, advanced security, and flexible configuration options. However, configuring PowerMTA can be a daunting task, especially for those new to email server administration. In this article, we'll provide a comprehensive PowerMTA configuration guide, covering the top tips and tricks to help you get the most out of your email server.