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Harbor & Vine Digital

DMARC report

example-client.com

WARN2026-W28

WARN — 96.4% of your 12,480 messages authenticated; some traffic is failing DMARC and needs a look.

What changed since last week

Message volume is up from 9,900 to 12,480. DMARC pass rate fell from 99.1% to 96.4%. 1 new sending source appeared this week: 198.51.100.42.

What to fix

  1. SPF is failing for mail from mailchimp (198.51.100.42) — add include:servers.mcsv.net to your SPF record.
  2. Once your legitimate senders authenticate, move your policy from p=none to p=quarantine (you are still at p=none).