Version 5.3.0

5.3.0 MetaDefender Email Gateway Security release
May 5, 2021MetaDefender Email Gateway Security 5.3.0 is a feature release. The most important change is the new, scalable architecture that supports theoretically any deployment size.
New & improved
Scalable product architectureIn a scalable deployment Email Gateway Security instances work on a shared email history database. This way all connected instances can see the email history and the quarantine of all the instances. Also, operations on any quarantined email can be performed on emails of any (other) instance. For details see Installation/Licensing, Installation/Scalable deployment, Scalable deployment related registry configuration, Scalable deployment operation.
Quarantine operated by recipientsQuarantine reports are intended to lower the load on Email Gateway Security operations by delegating certain quarantine related tasks to the recipient of the quarantined item. For details see Configuration/Quarantine reports and Operating/Quarantine reports.
History database backupTo mitigate the risk of losing email history and quarantine data, Email Gateway Security automatically takes backup of the email history database. For details see Operating/History database backup.
Fixed
Webhook over TLS was unstableEmail Gateway Security supports webhooks for MetaDefender Core type server profiles (instead of polling). Webhooks were not stable when TLS was enabled. For details see Configuration/Server profiles.
Retry recent history entriesThe function Retry email history entries newer than under Audit > Email History did not work properly. Instead of retrying emails newer than X days, all failed emails were retried. For details see Operating/Email History.
Changed
Disclaimer style faceliftingDisclaimer styles have been slightly updated with introducing a completely new style, Critical. For details see Configuration/Policy.
SMTP AUTH removedEmail Gateway Security's inbound SMTP server listed SMTP AUTH methods PLAIN and LOGIN as supported on cleartext SMTP. These authentication methods are not supported and have been removed from the HELO/EHLO method list.
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