A practical explanation of SPF's 10-DNS-lookup limit, why valid-looking records can fail, and how to diagnose the full lookup tree.
Why SPF Breaks After Adding One More Email Provider
Your SPF record may look valid and still produce a PermError.
This often happens after connecting one more service:
Google Workspace
Microsoft 365
Your SPF record can be perfectly valid, publish without a single error, and still fail every time it...
There's a failure mode in SPF that produces no error anywhere you'd think to look. Your record is...
Your SPF record looks correct. You added the include values your email provider told you to add. You...
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