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What email security settings should a new domain use?

We have created mailboxes, but I keep hearing about SPF, DKIM and DMARC. Where should we start?

Source and scope: My Business Path prepared and reviewed this general guidance as a practical starting point. It is not advice tailored to your circumstances. Check the linked official source before acting. NCSC: Email security and anti-spoofing

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My Business Path starting point

Follow the email provider and NCSC guidance to configure domain authentication, monitor failures and move enforcement carefully. Protect registrar and DNS accounts with MFA and documented recovery.

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