SPF & DKIM

Why DMARC Busta writes ~all, not -all

Hard-fail SPF is the convention. The DMARC standard says it's the wrong default for a domain that sends mail. Here's what RFC 9989 says, what our scan of 10,409 Australian domains shows, and what Autopilot writes.

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Fixing SPF alignment failures

SPF alignment failures are among the most frustrating email authentication issues facing organizations today. Even with properly configured DMARC policies, legitimate emails can fail authentication...

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DKIM key rotation strategies

DKIM key rotation represents one of the most critical yet overlooked aspects of email authentication infrastructure. While organizations invest heavily in implementing DMARC policies and SPF record...

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DKIM Signing: Best Practices and Common Mistakes

DKIM provides email integrity and authentication. Learn how to implement DKIM correctly and avoid common configuration errors.

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SPF Record Optimization: Staying Under the 10 Lookup Limit

SPF has a strict 10 DNS lookup limit. Learn strategies to optimize your SPF record without breaking email delivery.

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Troubleshooting SPF Alignment Issues

SPF alignment failures can cause DMARC failures. Learn how to diagnose and fix common SPF alignment problems.

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