Example:
<source *> # Deny all by default allow-relay no </source>
Use unique selectors (e.g., pmta2026 ) to allow seamless annual key rotation without disrupting active streams. 4. ISP-Specific Back-Off Configurations
queue-path /var/spool/pmta tls-cert /etc/ssl/certs/pmta.crt tls-key /etc/ssl/private/pmta.key powermta configuration guide top
# Internal Application Server always-allow-relaying yes smtp-service yes log-connections yes log-commands no process-x-envid yes # Authenticated External Senders smtp-service yes always-allow-relaying no require-auth yes smtp-auth username:password PLAIN LOGIN Use code with caution. 3. Outbound VirtualMTAs and IP Binding
The configuration relies on global directives and specific structural blocks called (such as , , and ). Understanding how these components inherit settings is critical to building an efficient configuration. 2. Setting Up Virtual MTAs and IP Binding
Define separate vMTAs for different types of traffic (e.g., transactional, marketing). Example: <source *> # Deny all by default
When a recipient clicks "Spam," the ISP sends a notification. Route these to a dedicated inbox for processing.
PowerMTA supports various authentication methods, including SASL, SSL/TLS, and IP-based authentication. To set up authentication, you'll need to configure the auth section in your powerMTA.cf file.
Pools allow you to distribute load across multiple IPs automatically. and DMARC alignments.
If you would like to customize this configuration further, tell me: What do you plan to send daily?
Send a test email to a tool like Mail-tester to verify SPF, DKIM, and DMARC alignments.