Libraesva ESG 4.8 to 4.9 Upgrade

Libraesva ESG v4.8 to
File Size6.18 KB
File MD5e0445b40b093f40e4dc615bba7a39be3
File SHA2567294135e71ba1bef44084b6f8da1c353afea0ccde35249a55b7b7286ea05a5aa
Create DateDecember 29, 2020
Last UpdatedDecember 29, 2020

Changes in v4.9.0 (Dec 29, 2020)


  • New Multi-Factor Authentication with T-OTP (time-based one-time-password) is now available to admins and users
  • Threat Remediation (recall email messages from inbox) now available also for G-Suite
  • Custom TLS certificates can be used to relay email to internal domains. Microsoft365 inbound connectors can be based on the Common Name of the TLS certificate for a complete multi-tenant interoperability.
  • URLs rewritten by URLSand can be logged to syslog
  • Configurable sender/recipient address/domain rewriting. ESG can transparently replace domains or email addresses.
  • Domain Text Import: additional fields are supported by the batch import procedure.
  • New API "Mark For Release" is now available
  • Add Blacklist link now available in the Digest Report actions


  • Updated Content-Security-Policy header
  • CentOS security repository migrated to Libraesva Extended Support service


  • Microsoft 365 Threat Remediation: migrate from EWS to Graph API
  • Add "Quarantine Report" option to IMAP/POP3 Set
  • Users can "Mark for Release" a message also from WebUI
  • Additional search options in Password-less Authorized Devices list
  • More reliable cluster wizard procedure

Bug fixes

  • Distributed setup: reload license on slave nodes after configuration push
  • Preserve hosts file after hostname change
  • Properly show hosts file record from WebUI
  • Fixed Backup and Restore of DKIM configuration
  • Search: fixed a bug that may cause different records to be displayed in message detail
  • Custom Spam Rules can be applied also on a single address
  • Properly apply "AntiSpam Engine Processes" configuration after change
  • Clean exported csv of relay domain from spurious columns

NOTE: This upgrade takes up to 2 minutes to complete and requires a system restart. A Snapshot is always recommended as a best practice!
All automatic updates changes are listed in the full release notes
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