SPF Result - Temp Error

How to get here

The SPF - Temp Error page allows you to choose an action when the SPF filter is enabled and the result is "Temp Error."  This action activates when a temporary error occurred during lookup. This is a transient error.

The action to be taken when the query result is Temp Error

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.