Overview

Kerio Connect 10.0.9 p2 (build 9754) has been released and is available for download:

• Release date: 2026-03-25
• Build ID: 9754

Changes in this release

• Resolved agent log locking issue
• Fixed a regression with default email signatures not saving in Outlook Connector (Remove and Recreate the Profile)
• Implemented TCP fallback for truncated DNS responses
• Resolved misleading 2FA cookie token verification error messages
• Fixed security issue where allowed relay IPs bypass spam filtering
• Enhanced licensing enforcement during Active Directory synchronization
• Prevented GFI Agent from auto-enabling after upgrades
• Improved SMIME certificate handling for encrypted messages
• Fixed calendar file (.ics) preview encoding in Outlook Connector - (Remove and Recreate the Profile)
• "All Folders" Search feature fixed in New Connect UI
• Removed Kerio Connect Nano
• Enhanced Exchange Web Services (EWS) compatibility for third-party clients, fixing the following:
  • Error 108: "Not implemented only CategoryList configuration is supported" (GetUserConfiguration)
  • Error 339: "Only traversal type Shallow is supported" (FindItem)
  • Error 339: "Unsupported restriction type" (Filtering Operations)
• Added RFC 8058 compliance by including List-Unsubscribe headers in DKIM signatures for one-click unsubscribe support