This article applies to:
Question:
- What are the Release Notes for MailMarshal SPE 5.3?
Information:
The Release Notes included with MailMarshal SPE 5.3 are accurate as of the date of publication.
- Build 5.3.0.22502 was published on December 2, 2025.
- This article provides any additional information generated after that date.
- Full release notes are provided with the installation package.
Upgrade to 5.3 from 5.2.0 only
To upgrade from 4.3.x you must first upgrade to 5.2.0.
SQL Prerequisite Change
The minimum SQL version supported is SQL 2017.
Rule Updates
The latest versions include updated abilities for detection of malware, phishing, and spam. Review the latest
MailMarshal default rules and consider updating global policy to use the new features.