Microsoft Office 365

  • Updated on Aug 1, 2023
  • Published on Apr 22, 2020
  • 1 minute(s) read
  • Perimeter Support
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This article describes how to whitelist your Private Gateway IPs in Microsoft Office 365 to allow user access only via a secure connection.

Before you begin
  1. You'll need Administrator permissions to your company's Office365 workspace.
  2. You'll need to have an Owner / Manager role in Perimeter 81.

Whitelisting Gateway IPs in O365

  1. Log into your mail server admin portal and select Admin.

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2. Select Exchange.
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  1. Select Connection Filter (beneath the Protection heading).
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  2. Select Connection Filter, then select the Pencil icon to edit the default connection filter policy.
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  3. Under the IP Allow list, select the + sign to add an IP address.
  4. Add the Perimeter 81 static address to your Allowed IP list.

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  1. Select OK, then Save.