A "bounce" is not a single event. Better monitoring distinguishes between hard bounces (invalid user), soft bounces (mailbox full), and transient bounces (ISP rate-limiting).
Move away from static thresholds to dynamic anomaly detection.
Watch the staging queue. If it stays above 5,000 for more than 3 minutes, your IO or DNS resolution is bottlenecked. powermta monitoring better
Instead of scraping pmta show queue, implement a streaming collector:
# Example: JSON output for modern ingestion
pmta show queue --output json | jq '.virtual_mtas[] | name, active, hold, deferred'
Recommended stack:
For "Better" monitoring, script the extraction of data using PowerMTA CLI commands and push them to a time-series database.
Key Commands to Script:
The Workflow:
