Level: Beginner
Deliverability infrastructure that was correctly configured at launch can degrade over time due to DNS changes, provider policy updates, or shifting sending patterns.
DNS Records Can Break Silently
A DNS provider migration, a domain renewal issue, or an accidental record deletion can silently break SPF, DKIM, or DMARC without any obvious immediate symptom.
Provider Requirements Continue to Evolve
Major mailbox providers have progressively tightened authentication and compliance requirements in recent years, meaning a setup that was sufficient previously may no longer meet current enforcement standards.
Sending Patterns Change as a Business Grows
Volume increases, new sending sources, and expanded email programs all introduce new deliverability considerations that weren't relevant at a smaller scale.
Next step: Use the Find DNS Records to check your current DNS records to confirm nothing has silently broken since your last review.