The Spring Equinox Release

Digital spring tulips
  • April 3, 2025
Slightly before the dawn of the Spring Equinox this year, KumoMTA published the third stable release of 2025.
The first quarter of 2025 had been crazy busy, and all that activity is reflected in the depth of this release. 

We've said before that our sponsors drive our roadmap, and that was very much the case with this release.  Thank you to the user sponsors who worked with us this quarter on some powerful efficiency improvements and new features. New mx and data timeouts to avoid delays, automation of shaper functions, and an updated certificate behaviour for HTTP clients top the list of critical changes. 

There are also significant enhancements to DKIM signing, memory handling, logging, and caching.

Important changes have come to the template system as well.  We've added several Python compatibility functions to the minijinja template engine.  You can also use minijinja-formatted strings outside of templates. We've added more intelligence to the source selection algorithm to assist with Automated IP Warmup. And we've added batch processing to websockets.

Have you read the full release notes? Have you installed the Spring Equinox release?  We'd love to hear your feedback.  

 

Oh and, if you were in our Discord already, you would have read all about it the day it happened.

------------------------------------------------------------------

KumoMTA is the first open-source MTA designed from the ground up for the world's largest commercial senders. We are fueled by Professional Services and Sponsorship revenue.

Join the Discord | Review the Docs | Read the Blog | Grab the Code | Support the team