BounceBlock.io
Checklist

SPF, DKIM & DMARC Setup Checklist

If these three aren't configured, even a clean list can land in spam. Work through them in order for your sending domain.

SPF

  • Publish a single SPF TXT record listing every service that sends on your behalf.
  • Keep within the 10-DNS-lookup limit.
  • End the record with ~all (softfail) or -all (fail).

DKIM

  • Enable DKIM signing in your ESP / mail provider.
  • Publish the provider's DKIM public key as a DNS TXT record.
  • Verify mail is being signed and the signature validates.

DMARC

  • Publish a DMARC TXT record at _dmarc.yourdomain.com.
  • Start with p=none and a reporting address (rua=) to monitor.
  • Review aggregate reports, fix any failing sources, then move to p=quarantine and p=reject.

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