Security for Microsoft Exchange 8.8.3 Release Notes

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Trellix® Security for Microsoft Exchange (TSME) 8.8.3 includes new platform support and addresses customer issues. Every update release is cumulative and includes all features and fixes from the previous release. We recommend that you always upgrade to the most current update.

Release details

This release was developed for use with:

  • ePolicy OrchestratorTM - On-prem (ePO - On-prem) 5.10.x

  • Trellix® Agent 5.8.5

This release was developed and tested with:

  • Engine Version — 6820.10831

  • DAT Version — 11595.0000

For release date and build number details of 8.8.x, see KB94547.

Rating

The rating defines the urgency for installing this update.

This release is mandatory for all environments. Failure to apply mandatory updates might result in a security breach. Mandatory updates resolve vulnerabilities that might affect product functionality and compromise security. You must apply these updates to maintain a viable and supported product.

What's new

Platform support:

  • Microsoft Windows Server 2025

  • Microsoft Exchange Server Subscription Edition (SE)

Libcurl upgrade — This release upgrades the Libcurl version to 8.15.0.

PostgreSQL database upgrade — This release upgrades the internal PostgreSQL database for improved security and performance.

Resolved issues

Reference

Resolution

MSME-27015

Resolved an issue where TSME failed to recognize the Exchange server IP address when multiple network interfaces were present.

MSME-27014

Addressed an issue where unsigned third-party libraries in TSME triggered errors with Trellix Endpoint Security (ENS).

MSME-27033

Fixed an issue where CC recipients were incorrectly included during BCC quarantine release.

MSME-27034

Resolved an issue where On-Demand Scans failed to complete successfully.

MSME-27261

Fixed multiple issues that caused the scanning service to crash, particularly when Mail URL reputation was enabled.

MSME-27380

Resolved an issue where the URL database update process failed to reset correctly after the service was stopped.

MSME-26995

Fixed an issue where DAT updates failed when the update schedule was set to hourly.

MSME-27018

Resolved a calendar display issue in the French locale.