About releasing messages from the local quarantine

You can release messages from the local quarantine in the following ways:
By default, Mail Security version 7.5 and later do not re-scan the items that are quarantined due to antivirus and file filtering violations, once they are released. However, if the items are quarantined due to content filtering violations, Mail Security scans these items only for virus policies and file filtering conditions. This behavior is configurable through registry.
Messages that are released from the quarantine are not filtered for spam and filtering rules.
You may not be able to release the items from the quarantine if you are using the console on the Windows Server 2019 Core installation. You can use the remote console to release the items from the quarantine.