Microsoft Active Threat Protection (ATP or Safelinks) Whitelisting

In order to ensure Curricula phishing emails are properly delivered, and your reporting is accurate, it may be necessary to create a mail flow rule to ensure Curricula emails are whitelisted by Microsoft's ATP. This will also make sure that phishing emails are not opened/clicked prior to their delivery.


  1. Create a new mail flow rule in your Exchange/Office Admin center
  2. Give the rule a name such as "Bypass ATP Links".
  3. Click More options....
  4. From the Apply this rule if…. drop-down menu, select The senders then select IP address is in any of these ranges or exactly matches. 
  5. Enter our IP address 18.205.140.116
  6. From the Do the following… drop-down menu, select Modify the message properties... and then set a message header.
    • Click the first *Enter text... link and set the message header to:
      • X-MS-Exchange-Organization-SkipSafeLinksProcessing
    • Click the second *Enter text... link and set the value to: 1
    • Click Save.