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 [TY4PR01MB14844.jpnprd01.prod.outlook.com 2026-03-21T12:07:32.591Z 08DE85EBD5933059] [BY5PR03CA0002.namprd03.prod.outlook.com 2026-03-21T12:07:40.180Z 08DE870500905AE5] [CO1PEPF000075F2.namprd03.prod.outlook.com 2026-03-21T12:07:41.944Z 08DE84DEA321830D]"