How to identify for undelivered mail in java code for graph based api?

Shrawane, PratikDeepak 0 Reputation points
2024-07-05T06:35:09.5166667+00:00

For identifying undelivered mail, we are checking for "report-type=delivery-status" OR "X-MS-Exchange-Message-Is-Ndr" is present or not in mail headers content. But this is not present in our undelivered mail headers

Microsoft Security | Microsoft Graph
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