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The following table describes the quarantine reasons that display on the Quarantined Messages screen.

Quarantine Reasons

Quarantine Reason
Description
Content violation
Messages with content that matches a content filtering rule.
DLP incident
Messages with one or more data loss prevention (DLP) policy violations.
Malformed
Messages that cannot be opened for processing.
Spam detection
Messages that are detected as spam/graymail.
Threat detection
Messages that are detected to contain malware.
Unscannable
Messages that are not scannable.
Unsuccessful decryption
Messages that cannot be decrypted.
Unsuccessful encryption
Messages that cannot be encrypted.
Virtual Analyzer error
Messages that are not analyzed because of an unexpected error in Virtual Analyzer (for example, processing time-out).
Virtual Analyzer time-out
Messages that are not analyzed because of processing time-out in Virtual Analyzer.