Control the registrar account
Use an organization-controlled account, a long unique password, multifactor authentication, current recovery methods, and documented administrative ownership. Avoid tying the company’s domain permanently to one employee’s personal account.
Separate critical roles
Document the registrar, DNS host, website host, email provider, billing owner, and technical administrators. These may be different services, and losing access to one should not silently compromise the others.
Authenticate email
SPF, DKIM, and DMARC help receiving systems evaluate whether mail using the domain is authorized. Configuration must match every legitimate sender and should be monitored before enforcement becomes strict.
Protect recovery paths
Administrative email, registrar recovery, domain renewal, password-manager access, and billing methods should have redundancy and an offboarding process. The domain is a business asset, not an incidental subscription.