Create Connectors
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Microsoft Exchange uses connectors to manage inbound and outbound email flow. You must create an outbound connector that defines the Nightfall server to which emails must be redirected for scanning, and an inbound connector that defines how to identify emails scanned and routed to Exchange by Nightfall.
Navigate to the Exchange admin center page from your Exchange account.
Expand Mail flow and select Connectors.
Click Add a Connector.
Select Office 365 in the Connection from section.
Select Partner Organization in the Connection to section.
Click Next.
Enter a name for the connector.
(Optional) Enter a description for the connector.
Ensure that the Turn it on check box is selected.
Select the Only when I have a transport rule set up that redirects messages to this connector radio option.
Click Next.
Select the Route email through these smart hosts option.
Enter the following host domain and click + to add it.
Click Next.
Do not modify security settings. Click Next.
Click Next once the validation is successful.
Click Create Connector.
Click Add a Connector.
Select Your organization's email server in the Connection from section.
Click Next.
Enter a name for the connector.
(Optional) Enter a description for the connector.
Ensure that the Turn it on and the Retain internal Exchange email headers check boxes are selected.
Select the By verifying that the IP address of the sending server matches one of the following IP addresses, which belong exclusively to your organization option.
Obtain the IP addresses by executing the following steps.
Log in to Nightfall.
Click Integrations from the left menu.
Click Manage on the Exchange Online widget.
Click Deployment Guide on Exchange Online.
e. Note down the IP addresses present in the 4th point under Step 2.
Enter the IP addresses. Click + after entering each IP address.
Click Next.
Click Create Connector.
Enter as the validation Email and click Validate.
