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]"
The following message to <jamesleolky(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 [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]"
The following message to <jamesleolky(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 [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]"
The following message to <ellen-just(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 [AS2PR08MB10268.eurprd08.prod.outlook.com 2026-03-10T07:15:06.588Z 08DE7D020063F19C] [AM0P190CA0007.EURP190.PROD.OUTLOOK.COM 2026-03-10T07:14:46.751Z 08DE7E5751557BBD] [AM2PEPF0001C711.eurprd05.prod.outlook.com 2026-03-10T07:15:06.586Z 08DE79A0F4DFCDAA]"
The following message to <ellen-just(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 [DB9PR08MB6508.eurprd08.prod.outlook.com 2026-03-05T16:57:34.526Z 08DE7A6C566BBEA2] [AS4P189CA0045.EURP189.PROD.OUTLOOK.COM 2026-03-05T16:57:34.520Z 08DE78CF9ED57979] [AM4PEPF00027A6A.eurprd04.prod.outlook.com 2026-03-05T16:57:34.570Z 08DE7992F7C2F566]"