Incoming emails that fail SPF checks are blocked or marked in a manner that is visible to the recipients.
Topic
Sender Policy Framework
Applicable to
all
History
Priority
should
Sep 2022
Removed
The existing SPF control recommending that incoming emails that fail SPF checks be blocked or marked in a manner that is visible to recipients (ISM-1152) was replaced by a new DMARC control covering incoming emails being rejected if they do not pass DMARC checks (ISM-1799).
Mar 2019
Incoming emails that fail SPF checks are blocked or marked in a manner that is visible to the recipients.
Security control 1152 was reworded.
Feb 2019
Incoming emails that fail SPF checks are blocked, marked or identified in a manner that is visible to the email recipient.
2015
Agencies must block, mark or identify incoming emails that fail SPF checks in a manner that isvisible to the email recipient.
2010
Agencies should block, or mark as spam, incoming emails that fail SPF checks.