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Note

Add

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exists:%{i}._spf.inkyphishfence.com to your domains SPF record to ensure passing checks.

Full example with M365 for reference:

v=spf1 include:spf.protection.outlook.com exists:%{i}._spf.inkyphishfence.com -all

The exists mechanism is used to construct an arbitrary host name that is used for a DNS ‘A' record query. These 'A’ records are all of the current INKY IP addresses and will include any future address.

Why do I see SPF, DKIM, and DMARC failures in my message headers after enabling INKY?

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