Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment.

Overview

This article describes action MTA will perform on specific SPF result.

What to do

SPF Result	Explanation	Action by MTA
Pass	The client is authorized to inject mail with the given identity.	Accept
Fail	The client is not authorized to use the domain in the given identity.	Reject
SoftFail	The host is probably not authorized	Accept
Neutral	ADMD has explicitly stated that it is not asserting whether the IP address is authorized	Accept
None	No syntactically valid DNS domain name was extracted from the SMTP session that could be used as the one to be authorized or no SPF records were retrieved from the DNS	Reject
Permerror	The domain's published records could not be correctly interpreted. This signals an error condition that definitely requires DNS operator intervention to be resolved.	Accept
Temperor	The SPF verifier encountered a transient (generally DNS) error while performing the check	Accept

Regards,

Updated Disclaimer
[edited by: Erick Jan at 12:08 PM (GMT -7) on 17 Apr 2023]