office 365 mail SPF Fail but still delivered

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Occasional Visitor

Hello

today i received mail from my organization. i check headers and see that spf failed.

Received-SPF: Fail (protection.outlook.com: domain of mydomain.com does not
designate 67.220.184.98 as permitted sender) receiver=protection.outlook.com;

 

why spffailed mails normally received? 

 

i check SPF at mxtoolbox and SPF is correctly configured.

1 Reply
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Failing SPF will not cause Office 365 to drop a message, at best it will mark it as Junk, but even that wont happen in all scenarios.