The following message to <Jan.nick.dresia(a)outlook.de> 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 [AS8PR03MB6807.eurprd03.prod.outlook.com 2026-04-30T07:52:55.559Z 08DEA67D5CE8A91B] [DB8PR06CA0058.eurprd06.prod.outlook.com 2026-04-30T07:52:55.566Z 08DEA61ECBD1D4E0] [DB5PEPF00014B8E.eurprd02.prod.outlook.com 2026-04-30T07:52:55.565Z 08DE9FA9D9FBA7C1]"
The following message to <Jan.nick.dresia(a)outlook.de> 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 [AS8PR03MB7031.eurprd03.prod.outlook.com 2026-04-30T06:15:06.047Z 08DEA58F69FA56A1] [CWLP265CA0346.GBRP265.PROD.OUTLOOK.COM 2026-04-30T06:15:06.055Z 08DEA5A1C51916FC] [AMS0EPF000001A7.eurprd05.prod.outlook.com 2026-04-30T06:15:06.051Z 08DE9FC493C9B6A1]"
The following message to <johann.soetbeer(a)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 [SN7PR01MB8135.prod.exchangelabs.com 2026-04-29T10:09:48.621Z 08DEA58EAB312D2F] [PH8PR20CA0009.namprd20.prod.outlook.com 2026-04-29T10:09:48.630Z 08DEA5AA189F5030] [CY4PEPF0000E9CF.namprd03.prod.outlook.com 2026-04-29T10:09:48.645Z 08DEA166A7E87CDF]"
The following message to <Jan.nick.dresia(a)outlook.de> 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 [AM9PR03MB7252.eurprd03.prod.outlook.com 2026-04-24T11:13:23.455Z 08DEA156F8194EC3] [CWLP123CA0217.GBRP123.PROD.OUTLOOK.COM 2026-04-24T11:13:23.462Z 08DEA16132E6D6AA] [AM3PEPF0000A792.eurprd04.prod.outlook.com 2026-04-24T11:13:23.471Z 08DE9FD5372B714A]"
The following message to <wassim-mabrouk(a)hotmail.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 [AS8PR10MB6197.EURPRD10.PROD.OUTLOOK.COM 2026-04-08T15:39:46.341Z 08DE8FC11C628FD2] [AM0PR10CA0026.EURPRD10.PROD.OUTLOOK.COM 2026-04-08T15:39:45.622Z 08DE957DC1CB04D3] [AM4PEPF00027A5F.eurprd04.prod.outlook.com 2026-04-08T15:39:46.345Z 08DE8F810857B7C3]"
The following message to <wassim-mabrouk(a)hotmail.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 [DB9PR10MB5667.EURPRD10.PROD.OUTLOOK.COM 2026-04-02T11:48:52.217Z 08DE8F574A6B1E0E] [AM0PR10CA0014.EURPRD10.PROD.OUTLOOK.COM 2026-04-02T11:48:35.829Z 08DE8EAFA3E3FF4D] [AM2PEPF0001C711.eurprd05.prod.outlook.com 2026-04-02T11:48:52.223Z 08DE907EF0119A58]"