Is DNS setup “one and done”?
- Myth: Set up DNS records once and never touch them again.
- Reality: DNS requires ongoing attention.
What changes:
- Adding or removing sending services (SPF updates)
- DKIM key rotation (security best practice)
- Policy progression (DMARC none → quarantine → reject)
- Provider IP changes (flattened SPF goes stale)
- Service migrations (MX changes)
Maintenance activities:
- Quarterly review of authentication records
- Monitor DMARC reports for issues
- Update when adding new email services
- Verify after any infrastructure changes
Ship registrations require regular renewal and updates. The registry is not a set-and-forget system.
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