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MS O365 Admin - Voicemail IPs To Whitelist


This article addresses the fraudulent email error received from voicemail or email notifications.

Adding IP addresses to Office 365

  1. Log into your Office 365 Exchange Admin Center with your Admin Credentials.
  2. Navigate to Protection and then select Connection Filter and Double Click on Default.

O365 - Connection Filter.png

3. Click on connection filtering and then click on the plug sign underneath IP Allow list.

O365 - Connection Filtering.png

4. Add the IP address ( as shown below and then click OK.

O365 - Add allowed IP address.png

5. Repeat the same steps again to add another IP address (

O365 - Add allowed IP address2.png

6. Click Save below

O365 - save allowed IP addresses.png