Inspection mode differences for Email Filter

Inspection mode differences for Email Filter

This section identifies the behavioral differences between Email Filter operating in flow and proxy inspection.

Feature comparison between Email Filter inspection modes

The following table indicates which Email Filters are supported by their designated inspection modes.

  SMTP POP3 IMAP MAPI
Proxy Yes Yes Yes Yes
Flow Yes Yes Yes No

Feature comparison between Email Filter inspection modes

The following tables indicate which Email Filters are supported by the specified inspection modes for local filtering and FortiGuard-assisted filtering.

Local Filtering Banned

Word

Check

Black/

White

List

HELO/

EHLO

DNS Check

Return

Address

DNS Check

DNSBL/

ORBL

Check

MIME

Header

Check

File Filter
Proxy Yes Yes Yes Yes Yes Yes Yes
Flow Yes No No No No Yes No
FortiGuard-Assisted Filtering Phishing URL Check   Anti-Spam

Black List

Check

Submit Spam to FortiGuard Spam Email

Checksum

Check

Spam

URL Check

Proxy Yes   Yes Yes Yes Yes
Flow No   No No No No

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