Connect Microsoft Exchange and Enterprise DLP

1. Contact your email domain provider to update your SFP record to add the required Enterprise DLP service IP addresses.

   Add the IP addresses for the region where your email domain is hosted. You can update your SFP record with multiple regional IP addresses if you have email domains hosted in multiple regions.

   • APAC—35.186.151.226 and 34.87.43.120
   • Europe—34.141.90.172 and 34.107.47.119
   • United States—34.168.197.200 and 34.83.143.116
2. (Best Practices) Confirm that Active Directory is properly configured so email senders have a manager to approve or reject quarantined emails.

   Microsoft Exchange Active Directory is required to assign a manager to a sender. You can create a transport rule to quarantine and send the email for approval by the sender's manager. To successfully quarantine a sender's email if sensitive data is detected by Enterprise DLP, a sender must have a manager assigned.

   If no manager is assigned to a user, then the quarantined email is sent to the recipient because no manager is assigned to approve or reject the email.
3. (Best Practices) Save Evidence for Investigative Analysis with Enterprise DLP.

   Palo Alto Networks recommends configuring evidence storage so you can download emails for investigative analysis when your review Email DLP incidents.
4. Set up the Cloud Identity Engine (CIE).

   CIE is recommended so you can create targeted Email DLP policies.
5. Create the Microsoft Exchange connectors and transport rules, and create the Email DLP Policy.

   Palo Alto Networks recommends setting up all connectors, transport rules and Email DLP policies to ensure enforcements begins as soon as you successfully connect Microsoft Exchange Online to Enterprise DLP.

   • Create a Microsoft Exchange Outbound Connector
     The outbound connector controls the flow of emails forwarded from Microsoft Exchange to Enterprise DLP.
   • Create a Microsoft Exchange Inbound Connector
     The inbound connector controls the flow of emails forwarded to Enterprise DLP back to Microsoft Exchange.
   • Create Microsoft Exchange Transport Rules
     Transport rules allows Microsoft Exchange to forward emails to Enterprise DLP and establishes the actions Microsoft Exchange takes based on the hosted quarantine, admin approval, manager approval, encrypt, or block transport rules verdicts rendered by Enterprise DLP.
   • Add a Enterprise DLP Email Policy
     The DLP email policy specifies the incident severity and the action Enterprise DLP takes when matching traffic is inspected and sensitive data is detected.
6. Obtain Your Microsoft Exchange Domain and Relay Host.
7. Log in to Strata Cloud Manager.
8. Select ManageConfigurationSaaS SecuritySettingsApps Onboarding.
9. Search for Exchange and click Microsoft Exchange.

10. In the Email DLP Instance, click Add Instance.
11. In the Setup Connectors and Rules page, click Continue to Next Section since you have already configured the outbound connector, inbound connector, and transport rules.
12. In the Configure Smart Host page, add the email domains and relay hosts.

    Adding one or more email domains and relay hosts is required to ensure emails inspected by Enterprise DLP are successfully forwarded back to Microsoft Exchange.

    1. Enter an Email Domain and its corresponding Relay Host you obtained in the previous step.

       Obtain Your Microsoft Exchange Domain and Relay Host if you don't have the Microsoft Exchange email domain and relay host immediately available.
    2. (Optional) Add any additional email domains and relay hosts as needed.
    3. Connect.
13. Microsoft Exchange is now successfully connected and onboarded.

14. Configure the Email DLP settings.

    • Edit the snippet settings to configure if and how Enterprise DLP stores and masks snippets of sensitive data that match your data pattern match criteria.
    • Edit the policy evaluation timeout settings to configure what Enterprise DLP does when Email DLP policy evaluation exceeds the configured timeout.
    • Configure evidence storage to save evidence for investigative analysis.