5.4.0 MetaDefender Email Gateway Security release

July 5^th, 2021

MetaDefender Email Gateway Security 5.4.0 is a feature release. The most important news are the S/MIME digital signature support for notification, alert and report emails, and the MetaDefender Cloud integration.

New & improved

MetaDefender Cloud integration (beta)

Email Gateway Security now can be integrated to MetaDefender Cloud for anti-malware scanning and content disarm and reconstruction tasks. MetaDefender Cloud is treated as yet another server specification in the server profile.

For details see 4.6. Server profiles.

Digitally signing notifications

To trust notification, alert and report emails sent by the product, Email Gateway Security can be configured to digitally sign these emails using S/MIME.

For details see 4.8. Alert, notification and quarantine report emails.

Upgraded 3rd party libraries

3rd party libraries built into Email Gateway Security are upgraded to their latest version. To mention the most important, security critical ones:

• OpenSSL: 1.1.1k

• Qt: 6.1

• NGINX: 1.21.0

Added support for TLS 1.3

Given by the updated 3^rd party libraries, Email Gateway Security now supports TLS 1.3 on HTTPS connections.

For details see 4.2. Transport Layer Security.

Changed

Ceased to support SSL 3.0

Email Gateway Security ceased supporting SSL 3.0 on HTTPS and SMTPS connections.

Sender of notifications & alerts

Configuration of the sender of all notification, report and alert emails is now merged to a single configuration entry under Settings > Alerts & Reports / Sender email address.

Previously all notifications, reports and alerts had their own entry to configure the sender.