"Action to take" configured for "Encrypted file rule" (default: Log only) does not act as configured from time to time.
Other actions like quarantine are applied for mails attached with encrypted file(s).
This issue is observed randomly and is not consistent though, there is a tendency that is likely to occur after Live Update.
This issue is resolved under etrack #3972105 in SMSMSE 7.5.5.
Upgrade to SMSMSE 7.5.5 to resolve this issue.