The Ultimate PowerMTA Configuration Guide: Top Settings and Best Practices
# Feedback Loops (FBL) enable-fbl yes
Publish an SPF record for every domain you send from. A typical SPF policy includes all PowerMTA sending IPs:
: Sets the hostname of the server (e.g., ://yourdomain.com ). log-file : Defines the path for logs.
# Limit sending to Gmail max-smtp-out 20 retry-after 10m Use code with caution. B. DKIM Signing