How to Whitelist in Trend Micro

If you're utilizing Trend Micro's services, you can whitelist KnowBe4 to allow our simulated phishing test emails and training notifications through to your end users. If you run into issues whitelisting KnowBe4 in your Trend Micro services, we recommend reaching out to Trend Micro for specific instructions. You can also contact our Support team whenever you need assistance. 

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Whitelisting by Domain in Trend Micro

• Advanced Spam Protection
• Malware Scanning
• File Blocking
• Web Reputation
• Virtual Analyzer

Whitelisting Trend Micro Hosted Email Security

Whitelisting by Domain in Trend Micro

The whitelisting process is broken down into 5 sections. Each section has its own steps for configuration and must be completed to successfully whitelist KnowBe4. 

Advanced Spam Protection

1. Navigate to the Advanced Threat Protection tab > Add.
2. Select the policy to create based on the service:
• Exchange
• OneDrive
• SharePoint
• Box
• Dropbox
• Google
3. On the left, select Advanced Spam Protection.
4. Check the Enable Advanced Spam Protection option.
5. Select the Approved/Blocked Sender List section.
6. Check the box next to the Enable the approved sender list option.
7. Enter *@knowbe4.com in the text field and click the Add > button.

8. Select the Rules configuration section.
9. Under the Apply to: drop-down, select the Incoming messages option.
10. For Detection Level:, select the Medium option.

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Malware Scanning

11. On the left, select Malware Scanning.
12. Select the Rules configuration section.
13. Under the Apply to: drop-down, select the All messages option.
14. Under Malware Scanning, select Scan all files and check the box next to Scan message body and Enable IntelliTrap.

15. Select the Action configuration section.
16. For Action:, select the Trend Micro recommend actions option from the drop-down.
17. For Notification:, select the Notify option from the drop-down.

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File Blocking

18. On the left, select File Blocking and select Enable File Blocking. We recommend keeping File Blocking on because you cannot limit this option to KnowBe4 messages. Turning off File Blocking could allow potentially malicious attachments through to your users.

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Web Reputation

19. On the left, select Web Reputation.
20. Check the Enable Web Reputation option.
21. Select the Rules configuration section.
22. Under the Apply to: drop-down, select the All messages option.
23. For Security Level:, select the Medium option.

24. Select the Approved/Blocked URL List section.
25. Check the box next to the Enable the approved URL list option.
26. Check the box next to the Add internal domains to the approved URL list option.
27. Enter our hostnames in the text field. For the most up-to-date list of our hostnames, please see this article.
28. Then, click the Add > button.

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Virtual Analyzer

29. On the left, select Virtual Analyzer.
30. Check the Enable Virtual Analyzer option.
31. Click the Save button.

Once all steps in each section are completed, your new policy will appear under the Advanced Threat Protection tab.

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Whitelisting Trend Micro Hosted Email Security

Trend Micro Hosted Email Security does not allow emails from non-registered domains regardless of whether or not they were added to the Allowed Senders list. For more information, see this article on Trend Micro's site. If you are using Trend Micro Hosted Email Security, we recommend using Smart Hosting to allow our emails to get through to your users. See this article for instructions on how to set up Smart Hosting.

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