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Business owner looking stressed at a laptop after emails bounce back

Emails to Outlook and Hotmail Bouncing Back? Why It's Happening and How to Fix It

Australian businesses are reporting emails rejected by Outlook.com and Hotmail addresses. Here is what the bounce message means, who is affected, and how to fix your domain's SPF, DKIM and DMARC.

10 November 2026 · 7 min read

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