>
    Strata Copilot
    Obtain Your Microsoft Exchange Domain and Relay Host
    Focus
    Download PDF
    Focus
    1. Home
    2. Enterprise DLP
    3. Administration
    4. Configure Enterprise DLP
    5. Email DLP
    6. Onboard Microsoft Exchange Online
    7. Obtain Your Microsoft Exchange Domain and Relay Host
    Download PDF
    Enterprise DLP

    Obtain Your Microsoft Exchange Domain and Relay Host

    Table of Contents

    Obtain Your Microsoft Exchange Domain and Relay Host

    Obtain your Microsoft Exchange domain and relay to hosts to connect Microsoft Exchange to Enterprise Data Loss Prevention (E-DLP).
    On May 7, 2025, Palo Alto Networks is introducing new Evidence Storage and Syslog Forwarding service IP addresses to improve performance and expand availability for these services globally.
    You must allow these new service IP addresses on your network to avoid disruptions for these services. Review the Enterprise DLP Release Notes for more information.
    Where Can I Use This?What Do I Need?
    • Data Security
    • One of the following licenses that include the Enterprise DLP license
      Review the Supported Platforms for details on the required license for each enforcement point.
      • Prisma Access CASB license
      • Next-Generation CASB for Prisma Access and NGFW (CASB-X) license
      • Data Security license
    • Email DLP license
    You must obtain your Microsoft Exchange domain and relay host to connect Microsoft Exchange and Enterprise Data Loss Prevention (E-DLP) for inline inspection and prevention of sensitive data exfiltration contained in outbound emails.
    1. Log in to the Microsoft Office 365 Admin Portal.
    2. Select SettingsDomains.
    3. Make note of the Microsoft Exchange domains lists in the Domain name list.
      Enterprise DLP supports inline inspection of emails from multiple domains if you use multiple Microsoft Exchange domains make sure to make note of all email domains for which you want inline inspection of emails.
    4. Obtain the relay host for the Microsoft Exchange domain.
      Repeat this step for all Microsoft Exchange domains you want to connect to Enterprise DLP.
      1. Click the Microsoft Exchange domain.
      2. Select DNS records.
      3. In the Microsoft Exchange section, locate the MX record.
        The Value column for the MX record lists the relay host for the domain. An example of a relay host is shown below.
        The MX record displays a 0 before the relay host. This character is not required to connect Microsoft Exchange to Enterprise DLP.

    © 2026 Palo Alto Networks, Inc. All rights reserved.