Allowlisting in Proofpoint Essentials

When you're ready to allowlist in Proofpoint Essentials, follow the instructions below. (Instructions sourced from Proofpoint's Safelisting Addresses article.)

1. Navigate to Security Settings > Email > Sender Lists.
2. Under the Safe Sender list, enter the IP addresses of our mail servers shown here.
3. Click Save.

⚠️ If you encounter issues with attachment-related emails, refer to Proofpoint's article on Blocks by Default.

Allowlisting in Proofpoint Enterprise

To allowlist in Proofpoint Enterprise, follow the instructions below.

1. Log in to your Proofpoint Enterprise Admin console.
2. Click Email Protection.
3. Under the 'Spam Detection' drop-down, select Organizational Safe List.
4. Click Add.
5. In the 'Proofpoint - Global Safe List' window, enter the following information:
• Filter Type: From the drop-down menu, select Sender Hostname.
• Operator: From the drop-down menu, select Equals.
• Value: Enter the IP addresses of our mail servers, shown here.
6. ⚠️ In some cases, adding our sending IPs alone may not be sufficient. Proofpoint may still assign a Phish Score 100, triggering the inbound_phish policy. To prevent this, also add the domain used for phishing simulations to the Organizational Safe List. A full list of our domains can be found here.
7. Click Save Changes.

Avoiding Issues with Targeted Attack Protection (TAP)

To prevent potential issues with Proofpoint’s Targeted Attack Protection, we recommend adding our IP addresses to URL Defence:

1. Navigate to your Proofpoint Essentials Admin Console.
2. Click Email Protection.
3. Under the 'Targeted Attack Protection' drop-down, select URL Defense.
4. Click URL Rewrite Policies.
5. Under the 'Exceptions' section, enter the IP addresses of our mail servers shown here.
6. Click Save Changes.