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Disable insecure legacy email protocols (eg SMTP, POP3, IMAP) – Default Setting for New Mailboxes

Introduction Legacy email protocols such as POP and IMAP do not support modern authentication so brute force password spray attacks may succeed in breaching the tenants mailboxes. To best protect from this, we recommend you disable insecure legacy email protocols […]

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Disable insecure legacy email protocols (eg SMTP, POP3, IMAP) – Enforce Existing Mailboxes

Introduction Legacy email protocols such as POP and IMAP do not support modern authentication so brute force password spray attacks may succeed in breaching the tenants mailboxes. To best protect from this, we recommend you disable insecure legacy email protocols […]

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