Establish administrative ownership
Create named administrators, protect privileged accounts with strong MFA and separate everyday user activity from high-privilege administration where practical.
Configure domain and email authentication
MX routing, SPF, DKIM and DMARC should be implemented deliberately. Migration or coexistence scenarios need additional attention to routing and forwarding paths.
Control sharing and devices
Drive sharing defaults, external collaboration, endpoint management and application access should reflect the organisation’s data sensitivity and working model.
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