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Email Management Overview

With Email Management, enrolled SRX devices transparently submit potentially malicious email attachments to the cloud for inspection. Once an attachment is evaluated, Juniper ATP Cloud assigns the file a threat score between 0-10 with 10 being the most malicious.

Note If an email contains no attachments, it is allowed to pass without any analysis.

Benefits of Email Management

Configure Juniper ATP Cloud to take one of the following actions when an email attachment is determined to be malicious:

For SMTP

For IMAP

Figure 17: Email Management Overview

Email Management Overview

Quarantine Release

If the recipient selects to release a quarantined email, it is allowed to pass through the SRX series with a header message that prevents it from being quarantined again, but the attachments are placed in a password-protected ZIP file. The password required to open the ZIP file is also included as a separate attachment. The administrator is notified when the recipient takes an action on the email (either to release or delete it).

If you configure Juniper ATP Cloud to have the recipient send a request to the administrator to release the email, the recipient previews the email in the Juniper ATP Cloud quarantine portal and can select to Delete the email or Request to Release. The recipient receives a message when the administrator takes action (either to release or delete the email.)

Blacklist and Whitelist

Emails are checked against administrator-configured blocklists and allowlists using information such as Envelope From (MAIL FROM), Envelope To (RCPT TO), Body Sender, Body Receiver. If an email matches the allowlist, that email is allowed through without any scanning. If an email matches the blocklist, it is considered to be malicious and is handled the same way as an email with a malicious attachment.

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