Office 365: Configure Inbound Relaying

The following steps should be taken to route email from Proofpoint Essentials to Office 365

Configure Proofpoint Essentials

Locate your MX record for your domain in Office 365

1. Log in to the Office 365 Exchange Admin Center (EAC)

2. Click on Domains from the left side navigation panel

3. Select the domain you wish to manage

4. Click Domain settings

5. Under Exchange Online, locate the MX row in the table from the Points to address column

6. Keep this information readily accessible

Register domain with Proofpoint Essentials

1. Log in to Proofpoint Essentials

2. Click on the Domains tab

3. Click on Add New Domain

4. Enter your domain name

5. Select purpose (Relay)

6. Copy the MX row value from the Points to address column in the Office 365 admin portal located previously in a separate tab

7. Click Save

Bypassing Spam Filtering in Office 365

You may want to adjust your spam filtering policy in Office 365 to bypass filtering for clean mail that is being sent from Proofpoint Essentials. Proofpoint Essentials IP ranges should be added to the Allowed List in the Connection Filtering Policy within the Office 365 Exchange Admin Center.

To add Proofpoint Essentials IP Ranges to the Connection Filter Policy:

1. Log in to the Office 365 Exchange Admin Center (EAC)

2. Click on protection

3. Click on connection filter

4. Click the Edit icon

5. Click on connection filtering

6. Click on the plus icon + within the IP Allow list section

7. Add the Proofpoint Essentials Main IP Address for the Data Center your account is located on. These IP addresses can be found at the following link:

8. Click Save to apply changes

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