Allow List mailservers - Microsoft Office 365

Allow listing CultureAI emails in Microsoft Office 365

To Allow list emails in Microsoft Office 365, you need to undertake the following steps:
  1. Create a ‘Bypass Spam’ rule for emails arriving from 149.72.233.190 & 149.72.224.180
  2. Create a 'Microsoft APT bypass' rules to bypass Safe Link and Safe Attachment processing.
  3. Create a connection filter rule to allow emails arriving from 149.72.233.190 & 149.72.224.180.

Step-by-step instructions provided below.

Configuring Allow Listing

Mail Flow Rules - Simulated Phishing

  1. 1. Navigate to the Office 365 Exchange Admin Centre
  2. The Exchange admin centre for your organisation is available at the following URL: 
  3. https://admin.exchange.microsoft.com/
  4. 2. Click 'Rules
  5. Rules’ can be found under the ‘mail flow’ heading:
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  6. 2. Click "Create a new rule"
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  7. You will need to fill out the new rule as the image below
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  8. Enter a name for the rule, such as "Spam Bypass Rule"
  9. Click the "Apply this rule if" dropdowns and select "The sender" > "IP address is any of these ranges"
    Enter the IP 149.72.233.190 when prompted and click add. Repeat to add 149.72.224.180, then click ‘ok’.
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  10. Add another condition and click the dropdown box and select "Modify the message properties" > "Set the spam confidence level (SLC). Set this to -1 (safe)
  11. Add another condition, click the drop down box and select  "Set the message header to" 'X-MS-Exchange-Organization-SkipSafeLinksProcessing' and set the value to '1'.
  12. Your new rule should now look as below. Click ‘Save’ to store this rule.  
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Mail Flow Rules - Reporting Add-in

If you are using the CultureAI reporting tool, you will need to add an additional mail flow rule to prevent the automatic processing of attachments from CultureAI. 

1. Create a new mail flow rule

This rule can be a standard rule following the same source IP setup as outlined in Step 3 above.

2. Add Microsoft ATP SafeAttachments header

Click 'Add Action' and select:

Modify the message properties > Set a message header

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Set the message header to 'X-MS-Exchange-Organization-SkipSafeAttachmentProcessing' and value to '1'.

3. Check and save

Your new rule should now look as below. Click ‘Save’ to store this rule.  

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Connection Filter Rules

1. Open the Office 365 Security and Compliance site

The security and compliance platform can be accessed from the following URL:

https://protection.office.com/

Under threat management select "Policy":

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Under policy select "Anti-spam":

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2. Edit the "Connection filter policy"

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Select "Edit" under the IP Allow List:

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Add both 149.72.233.190 and 149.72.224.180 to the ‘Allowed IP Address’ list. Click ‘Save’ to save the settings.

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