DSN

In the console: Settings › MTA › Reports › DSN

Who bounce messages come from when mail can’t be delivered or is delayed.

Delivery Status Notifications (DSN)

From Name

Name that will be used in the From header of Delivery Status Notifications (DSN) reports.

Settings of their own: see Expression. Name in the API: fromName.

From Address

Email address that will be used in the From header of Delivery Status Notifications (DSN) reports.

Settings of their own: see Expression. Name in the API: fromAddress.

Signature

Which domain's DKIM signatures to use when signing the Delivery Status Notifications.

Settings of their own: see Expression. Name in the API: dkimSignDomain.