Powermta Configuration Guide Top !!link!! Jun 2026

You can define a "cold" VMTA to send low volumes of email to a new IP, and then set max-cold-virtual-mta-msg to have PowerMTA automatically increase the daily volume over a defined period.

When a user marks your email as spam, major ISPs send a Feedback Loop report back to you. You can configure PMTA to route these complaints to your analytics software or instantly suppress the user from future mailings. 4. SMTP Authentication and Security

<domain bounce.yourdomain.com> smtp-hosts [10.0.0.1]:25 </domain>

Example: bounce-action permanent action suppress end bounce-action powermta configuration guide top

: Defines the path for daily traffic accounting logs, critical for deliverability audits.

| Benefit | Description | |---------|-------------| | Load Distribution | Instead of sending all traffic through one IP, PowerMTA distributes load across multiple IPs, reducing block risks | | Traffic Segmentation | Create separate VMTAs for transactional emails (receipts, notifications), marketing campaigns, and testing | | Provider-Specific Policies | Set different rules for Gmail, Yahoo, Outlook, and corporate systems | | Reputation Isolation | If one IP receives spam complaints, other VMTAs remain unaffected |

Define how PowerMTA allocates system threads to process inbound and outbound queues. You can define a "cold" VMTA to send

# Hostname configuration host-name mail.yourdomain.com # Default HELO/EHLO identity ehlo-name mail.yourdomain.com Use code with caution. B. VirtualMTA (vMTA) Configuration

Once configured, run pmta show status or navigate to http://your-server-ip:8080 to analyze traffic spikes, drop rates, and queue bottlenecks in real-time. Conclusion

Ensure your DNS records (SPF/DKIM/DMARC) are correct, then configure PowerMTA to sign every email automatically. Do not rely solely on your CMS (like WordPress or Mailwizz) to sign the mail; let the MTA handle the heavy lifting. # Hostname configuration host-name mail

: How many messages PowerMTA will push through a single TCP connection before closing it.

PowerMTA categorizes bounces automatically into internal codes (e.g., Code 10 for "bad mailbox", Code 20 for "mailbox full"). Accounting and Log Configuration