Encrypted Messages

An encrypted email message must be decrypted before it can be analyzed for viruses. Since the cloud service does not have access to the necessary decryption key, it cannot analyze an encrypted message. Similarly, the contents of a password-protected archive file attachment such as ZIP or RAR cannot be analyzed, because the password is unknown. To protect against the possibility of virus infection, Forcepoint Email Security Cloud allows such messages to be quarantined. Administrators can open quarantined messages later in a secure environment.

Select the Quarantine all messages containing encrypted archive files checkbox to quarantine emails with password-protected archive files attached (such as ZIP or RAR files).

Select the Quarantine all encrypted messages checkbox to quarantine encrypted email messages (such as those using PGP or S/MIME encryption). This setting also quarantines emails with password-protected PDF files or Microsoft Office files (such as DOC or DOCX) attached.

Encrypted Message Bypass

Encrypted Message Bypass is used to override the encrypted message settings for specific sender/recipient, domain, and group.

To enable the bypass setting:

Steps

  1. Navigate to the Antivirus tab and click Encrypted Message Bypass.
  2. Click Add to add a new rule.
  3. Enter a name in the Name field.
  4. Enter the sender email address, domain, or group in the Sender field.
  5. Enter the recipient email address, domain, or group in the Recipient field.
    Note:

    Accepted values for Sender and Recipient fields are *, a single email address, a single domain, or a single group. The * character can be used to apply the rule to any address. Include all addresses for a domain by using *@domain.com.

    For the Inbound policy, the group option is available for the Recipient field, and for the Outbound policy, the group option is available for the Sender field.

    Email addresses are case sensitive. Ensure email addresses are added using lowercase.

  6. Enter the description in the Description field.
  7. Toggle the State switch to ON to enable the rule.
  8. Click Save.