[Sprechstunden] Delivery Status Notification (Failure)

The following message to jamesleolky@outlook.com was undeliverable. The reason for the problem: 5.3.0 - Other mail system problem 550-"5.7.515 Access denied, sending domain LISTS.FSMPI.RWTH-AACHEN.DE doesn't meet the required authentication level. The sender's domain in the 5322.From address doesn't meet the authentication requirements defined for the sender. To learn how to fix this see: https://go.microsoft.com/fwlink/p/?linkid=2319303 Spf= Pass , Dkim= Fail , DMARC= Pass [TYCPR01MB10463.jpnprd01.prod.outlook.com 2026-03-23T11:21:00.570Z 08DE8814E20B4092] [DB9PR05CA0006.eurprd05.prod.outlook.com 2026-03-23T11:20:43.283Z 08DE888F0814FE52] [DB5PEPF00014B90.eurprd02.prod.outlook.com 2026-03-23T11:21:05.330Z 08DE84CC1D025A44]"