SPF Result - Fail

How to get here

The SPF - Fail page allows you to choose an action when the SPF filter is enabled and the result is "Fail."  This action activates when the message does not meet the publishing domain's definition of legitimacy.

The action to be taken when the query result is Fail

Tip: We recommend that you select the Insert X-Header option instead of Delete until you know that the SPF options are setup to best suit your filtering requirements.