Configure Sender Policy Framework (SPF) settings to allow Deep Discovery Email Inspector to determine whether a sender is permitted to send email messages for a domain, before delivering the email messages to the intended recipients.
Deep Discovery Email Inspector is unable to perform HELO/EHLO identification if it is deployed as a non-edge MTA.
- Go to Administration > Sender Filtering/Authentication > SPF.
- Select Enable Sender Policy Framework (SPF).
- For HELO/EHLO identity, select Enabled to check the sender information in HELO/EHLO commands; otherwise, select Disabled.
- To add verification result into the message header, select Insert X-Header into email messages.
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Specify the sender domains to verify. Select All to
perform SPF record checking for messages from all sender domains; otherwise,
select Specify sender domains and complete the following
steps to add sender domains to the verification list.
- Type a domain.
- Click Add.
Note:-
Enabling SPF validation for all domains may affect system performance.
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To remove a sender domain from the list, select the entry and click Delete.
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Specify the action to perform based on the verification
result.
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Bypass: Select this option to allow Deep Discovery Email Inspector to continue processing of the message.
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Block temporarily: Select this option to temporarily block the message. The sender can send the same message to Deep Discovery Email Inspector to perform the verification again.
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Block permanently: Select this option to permanently block the message. When a new message is received from the sender, Deep Discovery Email Inspector performs the verification again.
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- Click Save.