SMEX 10.2 automatically applies the "Pass" action on malformed emails that cannot be parsed or scanned. This may trigger a virus leak issue.
Learn how to get the Critical Patch 1 Build 3315, which has been released to address this problem.
Critical Patch 1 Build 3315 enables SMEX 10.2 to quarantine the unscannable malformed emails as "Unscannable Messages". The critical patch also sends the corresponding notifications based on the Virus Scan notification setting.