A "better" report doesn't just show "sent" mail; it categorizes the health of your mail streams. Why it Matters Better Approach Queue Depth Indicates bottlenecks. Monitor per-domain and per-VirtualMTA. Bounce Rates Affects reputation. Categorize by "Hard" vs "Soft" and "Policy" bounces. Connection Failures Signals ISP blocking. mx-connection-failures spike over 5% in 10 mins. Throughput (msgr/hr) Measures efficiency. Track per IP to identify "cold" or throttled IPs. Speed of delivery. Monitor the time mail spends in the "Spool" directory. 3. Advanced Monitoring Strategies
Group bounces by env_to domain + dsn code. If example.com shows 50% 4.7.1 (TLS required), your PMTA needs tls-level=require for that domain. powermta monitoring better
Do by measuring the time between dsn=2.0.0 (delivery) and fbl=complaint . If this lead time drops below 2 hours, your list hygiene is failing, and you are about to hit a spam trap. A "better" report doesn't just show "sent" mail;
Integrate these APIs to see how the major receivers view your traffic. Bounce Rates Affects reputation
Stop fixing problems after your inbox placement drops. Monitor better – catch issues before they impact deliverability.
: Categorize bounces as recipient-related (e.g., unknown user), domain-related, or spam-related (e.g., policy blocks).
These metrics track the absolute volume of data moving through your MTA. They help you understand capacity and catch sudden spikes in traffic that could indicate a compromised web form or a compromised sending account.