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✅ Whitelist a Domain in Microsoft 365

For companies using Microsoft 365, whitelisting a domain is typically done via Exchange Admin Center (EAC) or Microsoft Defender portal.

Updated today

  1. Go to Microsoft Defender Portal

  2. Navigate to Policies

    • Go to Email & Collaboration > Policies & Rules > Threat policies.

  3. Select Anti-Spam Policies

    • Under Policies, click Anti-spam policies.

    • Open your default policy (or create a new custom one).

  4. Edit the Allowed Senders and Domains

    • In the Allowed Domains section, add the domain (telgea.com and telgea.co).

    • If you can add an IP add: 143.244.83.135

  5. Save Changes

    • Confirm and Save.

🕒 Notes

  • Changes may take up to 1 hour to apply.

  • Whitelisting should be used carefully to avoid allowing malicious messages.

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