File
LibraCyber_ESG_v5.7_vSphere_legacy.ova
Version5.7.0
File Size1445M
File MD573746203c2cd7eadfa8b1074db28845e
File SHA256135fb0109261b02511be38f22b43f484ac33ae2dfdabe0618c981f1e18084ce7
Create DateNovember 3, 2026
Last UpdatedNovember 3, 2026

Libraesva Email Security Gateway v5.7 for VMware version 6.0 and 6.5 OVA

We are excited to announce the release of our leading email security suite Libraesva ESG version 5.7!

30 days FREE demo license available with simple online request.

Main features of version 5.7

  • Collaboration Protection: the ESG inspection engines — antivirus, URL sandboxing and data-loss prevention — extended to Microsoft Teams one-to-one chats, group chats and channel posts. An offending message is blocked in place and the sender can open a policy tip naming the rule that matched.
    Configured per Microsoft 365 tenant, served on a dedicated web endpoint with its own TLS certificate and worker pool. Available as a licensed add-on.
  • Threat Breakdown: a per-message report for any message classified as a threat, explaining the verdict instead of dumping scan fields: risk and spam confidence, sender identity, SPF, DKIM and DMARC in words, the correlated signals behind the verdict, the reconstructed attack chain, the matched rules, DLP and payload status, and prioritized recommended actions. The narrative and the attack chain are written by a language model running entirely on the appliance, so no message data leaves the box. Requires the medium resource profile or above.
  • SAML Single Sign-On: SAML 2.0 as a per-domain authentication scheme, against Microsoft 365 / Entra ID, Google Workspace or any other SAML 2.0 identity provider, alongside local, IMAP, POP3, LDAP and the existing connectors. Login and single logout are always started by ESG and a signature is always required.

Full release notes and breaking changes

Read the full Release Notes of Libraesva ESG v5.7

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