FBLs allow you to receive abuse reports (ARF messages) when a recipient marks your mail as spam. The <feedback‑loop‑processor> directive handles these reports.
Gmail prefers fewer parallel connections but accepts high volumes per connection over TLS.
PowerMTA features a highly capable HTTP management interface. Enabling this allows you to view your sending queues, monitor throughput (in emails per hour), and review bounce logs in real-time.
You must generate your private/public key pair and upload the public key to your DNS registrar before implementing this block. powermta configuration guide top
Before we dive into the configuration guide, let's cover some basics. PowerMTA is designed to be highly customizable and flexible, making it a popular choice for email service providers. It supports various features such as:
High bounce rates and spam complaints destroy your IP reputation instantly. PowerMTA's bounce parsing engine reads complex DSN (Delivery Status Notification) codes and categorizes them automatically. Configuring the Bounce Hook
Check the configuration syntax by running pmtadm check-config . FBLs allow you to receive abuse reports (ARF
By correctly segmenting IPs with VirtualMTAs, respecting ISP thresholds via tailored domain blocks, and activating automated backoff triggers, your PowerMTA installation will operate at peak efficiency with maximum deliverability.
smtp-source-ip 192.0.2.10 host-name ://yourdomain.com smtp-source-ip 192.0.2.11 host-name ://yourdomain.com Use code with caution. IP Pools for Load Balancing
max-smtp-out 10 max-msg-per-connection 50 backoff-to-normal-after 30m Use code with caution. 5. Automated Bounce and Backoff Management PowerMTA features a highly capable HTTP management interface
When a recipient clicks "Spam," the ISP sends a notification. Route these to a dedicated inbox for processing.
Every SMTP server must identify itself clearly to receiving servers. You must define your postmaster address and administrative emails.
openssl genrsa -out /etc/pmta/dkim/example.com.pem 2048 openssl rsa -in /etc/pmta/dkim/example.com.pem -pubout -out /etc/pmta/dkim/example.com.txt