Lightmeter 1.3.0: Deliverability news alerts and speed boost

Sam Tuke Feb 18 2021 Share

Critical news affecting global mail deliverability now appears as “News Insights“, together with new Lightmeter release announcements, and the analysis of log data is significantly more efficient.

13 Merge requests and 149 commits went into this release. Check the Roadmap to see what features are coming next.

This release contains three improvements requested by first-time contributors. Thank you! Your feedback drives decisions – message or speak with us – we’re listening.

Note that Lightmeter is still in early development and intended for small scale deployments. Known issues are documented in

Lightmeter Control Center 1.3.0 with News Insights displayed

News Insights

Sometimes external events affect the global mail network and your mailservers’ deliverability. Recent examples are Spamcop causing millions of servers to spontaneously reject all mail when their domain expired, and Gmail’s extended hard bouncing of valid mailboxes.

Reacting quickly in these cases is critical to minimizing disruption, which is why Lightmeter now creates occasional “News Insights” with information about such disruption, and generates optional notifications via enabled channels. New Lightmeter releases will also be communicated this way.

What’s else is new?

  1. Use a pool of read-only database connections, instead of one connection shared among many threads, improving analysis speed and performance
  2. Added support for Postfix local mail pickup, requested by @reinerjung
  3. Detect and support log files named simply maillog, requested by @jan.emsters
  4. Removed four RBLs from checks due to bad quality or practices (,,,
  5. Increased the number of insights shown by the Observatory view to 100
  6. Disallow selection of future dates on Observatory date-picker calendar
  7. Update observatory graphs at the same interval as insights (30 seconds)
  8. Prevent the log tracking database file from growing indefinitely due to a failing Ray Chaser temporary data purge
  9. Allow Postfix queue msgid to be empty instead of crashing, reported by @jan.emsters
  10. Fix mis-aligned date-picker dialogue, reported by @cweiske

The full list of merge requests and commits is on GitLab.

Get involved

Join us in making email peaceful and transparent — request or add what you’re missing to make your own mail server steadfast and efficient:

Go to the GitLab repo, fork it, build it, and submit your first pull request (there are many open issues to choose from if you’d like inspiration, including some quick wins). And if you get stuck at any point, drop by the forum, the Fediverse, Telegram, Twitter, or email.


Missing your favourite packaging system? Request it in the comments.

Supported by

This project has received funding from the European Union’s Horizon 2020 research and innovation programme within the framework of the NGI-POINTER Project funded under grant agreement No 871528.

NGI Pointer logo and EU flag symbol

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