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HDR-FROM-RETURNPATH-MISMATCH

From and Return-Path use different domains

What it means

Common with mailing services (bounces go to the service). DMARC still needs the From domain to align with SPF or DKIM; if neither aligns, the mail fails DMARC.

How to fix it

  1. 1Set up DKIM for your domain at the sending service so DKIM aligns even when the return path does not.

Re-check after the change

DNS changes can take up to the record's TTL to be seen; use Re-run on the result page to bypass our 10-minute cache.