Email authentication fix guides

Plain-English guides to fixing SPF, DKIM and DMARC problems, with the exact records to change.

• SPF too many DNS lookups

  What counts toward the limit, why it breaks quietly, and five ways to get back under it.

• DMARC p=none vs quarantine vs reject

  What each policy does, which one fits your domain, and a safe path from monitoring to full enforcement.

• SPF, DKIM and DMARC for Google Workspace

  The exact records to add, where to find your DKIM key in the Admin console, and how to confirm everything passes.