The following message to <zcekiz(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 [AS8P190MB1320.EURP190.PROD.OUTLOOK.COM 2026-05-12T16:25:00.219Z 08DEAF968263E212] [CH3P221CA0006.NAMP221.PROD.OUTLOOK.COM 2026-05-12T16:25:00.307Z 08DEB0099E59B573] [CH2PEPF0000009C.namprd02.prod.outlook.com 2026-05-12T16:25:00.298Z 08DEADE0B9F323EE]"
The following message to <zcekiz(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 [FRWP190MB2451.EURP190.PROD.OUTLOOK.COM 2026-05-12T12:58:31.512Z 08DEAFDFCE7F24EF] [MW4PR02CA0020.namprd02.prod.outlook.com 2026-05-12T12:58:31.585Z 08DEAFDC03DA7245] [CO1PEPF00012E7E.namprd03.prod.outlook.com 2026-05-12T12:58:31.580Z 08DEADAE57FCE53B]"
The following message to <mattia.comodi(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 [PAVPR02MB9428.eurprd02.prod.outlook.com 2026-05-12T11:42:56.066Z 08DEAFCA5FE3F075] [AS4P189CA0018.EURP189.PROD.OUTLOOK.COM 2026-05-12T11:42:56.068Z 08DEAFD4E2726259] [AM4PEPF00027A65.eurprd04.prod.outlook.com 2026-05-12T11:42:56.073Z 08DEADC3164F547D]"
The following message to <zcekiz(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 [VE1P190MB0815.EURP190.PROD.OUTLOOK.COM 2026-05-12T06:15:16.916Z 08DEAFBE74FFE384] [SI2PR06CA0002.apcprd06.prod.outlook.com 2026-05-12T06:15:17.008Z 08DEAFC7F21B9E16] [OSA0EPF000000C9.apcprd02.prod.outlook.com 2026-05-12T06:15:17.029Z 08DEADCA55B11EEB]"
The following message to <mattia.comodi(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 [DU0PR02MB8978.eurprd02.prod.outlook.com 2026-05-12T06:15:06.673Z 08DEAFB5894A3E13] [DUZPR01CA0022.eurprd01.prod.exchangelabs.com 2026-05-12T06:15:06.676Z 08DEAF0E2B98FAD4] [DU2PEPF00028D0A.eurprd03.prod.outlook.com 2026-05-12T06:15:06.675Z 08DEADCC8A068336]"
The following message to <mattia.comodi(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 [DB3PR0202MB9252.eurprd02.prod.outlook.com 2026-05-08T12:25:53.591Z 08DEAC7D715C3FC4] [CH0PR03CA0369.namprd03.prod.outlook.com 2026-05-08T12:25:53.614Z 08DEACA62D605B01] [CH1PEPF0000AD7E.namprd04.prod.outlook.com 2026-05-08T12:25:53.632Z 08DEA7395D9F1F3F]"
The following message to <zcekiz(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 [VI1P190MB0783.EURP190.PROD.OUTLOOK.COM 2026-05-07T08:40:22.804Z 08DEABB71DB031DD] [MN0PR04CA0026.namprd04.prod.outlook.com 2026-05-07T08:40:22.858Z 08DEABE19A24AA79] [BL02EPF00029929.namprd02.prod.outlook.com 2026-05-07T08:40:22.864Z 08DEA73C6A865428]"
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 [CH3PR01MB8285.prod.exchangelabs.com 2026-05-07T07:51:24.377Z 08DEAB30E68B97C5] [CH5P221CA0024.NAMP221.PROD.OUTLOOK.COM 2026-05-07T07:51:24.393Z 08DEABF5D51D9142] [CH1PEPF0000AD83.namprd04.prod.outlook.com 2026-05-07T07:51:24.388Z 08DEA751CED5DA7D]"
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 [SA1PR01MB6608.prod.exchangelabs.com 2026-05-07T06:15:07.853Z 08DEABE3EF82B01D] [IA4P220CA0008.NAMP220.PROD.OUTLOOK.COM 2026-05-07T06:15:07.901Z 08DEABF4F3CC59E3] [BL6PEPF0001AB76.namprd02.prod.outlook.com 2026-05-07T06:15:07.885Z 08DEA7433E0EDD67]"
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 [PH0PR01MB6619.prod.exchangelabs.com 2026-05-04T19:16:38.054Z 08DEA912B2D72168] [MN2PR03CA0018.namprd03.prod.outlook.com 2026-05-04T19:16:38.079Z 08DEA901A4C430CD] [BL02EPF0001A0FF.namprd03.prod.outlook.com 2026-05-04T19:16:38.089Z 08DEA71CE3979C0E]"