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SPF, DKIM, and DMARC

Emails are still a major threat to IT security. SPF, DKIM, and DMARC are now mandatory for sending to Outlook, Live, and Hotmail. For domains sending over 5,000 emails per day, Outlook will soon require compliance with SPF, DKIM, and DMARC. Non‐compliant messages will first be routed to Junk. If issues remain unresolved, they may eventually be rejected.

Apr 20, 2025 - 07:13
 0
SPF, DKIM, and DMARC

Emails are still a major threat to IT security.

SPF, DKIM, and DMARC are now mandatory for sending to Outlook, Live, and Hotmail.

For domains sending over 5,000 emails per day, Outlook will soon require compliance with SPF, DKIM, and DMARC. Non‐compliant messages will first be routed to Junk. If issues remain unresolved, they may eventually be rejected.

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