---
title: The Spring Equinox Release
description: The 2025 Spring Equinox marks the third stable KumoMTA release of the year. This release is packed with enhancements.
---

[KumoMTA Blog](https://kumomta.com/blog)

# [The Spring Equinox Release](https://kumomta.com/blog/spring-equinox-release)

 Written by [Tom Mairs](https://kumomta.com/blog/author/tom-mairs) | Apr 3, 2025, 8:35:58 PM

Slightly before the dawn of the Spring Equinox this year, KumoMTA published the [third stable release of 2025](https://docs.kumomta.com/changelog/2025.03.19-1d3f1f67/).

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](https://docs.kumomta.com/reference/kumo.dns/set_mx_timeout/) and [data timeouts](https://docs.kumomta.com/reference/kumo/start_esmtp_listener/data_processing_timeout/) 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](https://docs.kumomta.com/reference/string/eval_template/) outside of templates. We've added more intelligence to the [source selection](https://docs.kumomta.com/reference/kumo/make_egress_path/source_selection_rate/) algorithm to assist with Automated IP Warmup. And we've added [batch processing to websockets](https://docs.kumomta.com/reference/kumo.http/connect_websocket/#clientrecv_batchduration).

Have you read the [full release notes](https://docs.kumomta.com/changelog/2025.03.19-1d3f1f67/)? Have you installed the Spring Equinox release? [ We'd love to hear your feedback](https://discord.com/invite/tj4vrgC8k3).  

 

Oh and, if you were in our [Discord](https://discord.com/invite/tj4vrgC8k3) already, you would have [read all about it the day it happened](https://discord.com/channels/1072980126737907824/1083149128852308019/1352303167681069076).

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